Should you shut down your macbook every time you're not using it?

I've had my macbook for five years now and I was never told if I should be shutting it down whenever I'm not using it. Now after five years of doing this and never really having an problem I'm noticing that there is a lag in time and it does take forever to start back up once I turn it on, also my battery life is horrible I could probably go two hours (if that) without having to attach it a power soucre. I've started to notice it more since I've downloaded mavricks, so I'm wondering is this just because it's an older model and I've using it so much that it's just geting used to new software; or is this simiply a result of me shut it down and turning it on when using the macbook? The macbook itself is still great and I have no real issue with it, it's more of a worry I have with it. I'm starting grad school in the fall and I want to know if it's time that I should get a new macbook or if this puppy still has a lot more years with me.

If you've never replaced the hard drive, it could be slowing down - 3 to 5 years is the typical lifespan for a notebook hard drive.
Do you know how much RAM is in the computer?
If the computer mostly works OK, you may just need to invest in it a little - replacing the hard drive & upgrading the RAM will breathe new life into it, most likely!
You do not need to shut it down each time you're done using it - in fact, I leave my MacBook asleep 90% of the time and reboot it every couple of weeks or when it seems to be getting a bit sluggish. I've been doing that for the last 7 years and she's still chugging along.
~Lyssa

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    Hi,
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    **Click the KUDOS thumb up on the left to say 'Thanks'**
    Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

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    0xffffff80796db9a0 : 0xffffff800024421e
    0xffffff80796dbb80 : 0xffffff800022662d
    0xffffff80796dbbb0 : 0xffffff80005f55c7
    0xffffff80796dbbd0 : 0xffffff80005f58e9
    0xffffff80796dbc00 : 0xffffff80005f4009
    0xffffff80796dbc40 : 0xffffff80005f20c6
    0xffffff80796dbc90 : 0xffffff80005e3f86
    0xffffff80796dbce0 : 0xffffff80005e15a4
    0xffffff80796dbd10 : 0xffffff80005e3f86
    0xffffff80796dbd60 : 0xffffff80005e15a4
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    0xffffff80796dbde0 : 0xffffff800061c667
    0xffffff80796dbe00 : 0xffffff800061ecfb
    0xffffff80796dbe10 : 0xffffff80006511fb
    0xffffff80796dbe50 : 0xffffff800029d235
    0xffffff80796dbe80 : 0xffffff8000223006
    0xffffff80796dbeb0 : 0xffffff8000214829
    0xffffff80796dbf10 : 0xffffff800021bb58
    0xffffff80796dbf70 : 0xffffff80002ae8a0
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    com.parallels.kext.prl_vnic          7.0 14922.693916
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    com.apple.filesystems.afpfs          9.8
    com.apple.nke.asp_tcp          6.0.1
    com.apple.filesystems.udf          2.2
    com.apple.filesystems.smbfs          1.7.0
    com.apple.driver.AppleHWSensor          1.9.4d0
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    com.apple.driver.AppleMikeyHIDDriver          122
    com.apple.driver.AppleHDA          2.1.3f7
    com.apple.driver.AppleMikeyDriver          2.1.3f7
    com.apple.driver.AppleUpstreamUserClient          3.5.9
    com.apple.driver.AppleMCCSControl          1.0.26
    com.apple.driver.AGPM          100.12.42
    com.apple.GeForce          7.1.2
    com.apple.driver.SMCMotionSensor          3.0.1d2
    com.apple.driver.AppleSMCLMU          2.0.1d2
    com.apple.iokit.IOUserEthernet          1.0.0d1
    com.apple.Dont_Steal_Mac_OS_X          7.0.0
    com.apple.driver.AudioIPCDriver          1.2.1
    com.apple.driver.AppleMuxControl          3.0.16
    com.apple.driver.ACPI_SMC_PlatformPlugin          4.7.5d4
    com.apple.driver.AppleLPC          1.5.3
    com.apple.driver.AppleUSBTCButtons          225.2
    com.apple.driver.AppleUSBTCKeyboard          225.2
    com.apple.driver.AppleIRController          312
    com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
    com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
    com.apple.BootCache          33
    com.apple.driver.AppleUSBCardReader          3.0.1
    com.apple.iokit.SCSITaskUserClient          3.0.1
    com.apple.iokit.IOAHCIBlockStorage          2.0.1
    com.apple.driver.AppleFWOHCI          4.8.9
    com.apple.driver.AirPort.Brcm4331          512.20.18
    com.apple.driver.AppleEFINVRAM          1.5.0
    com.apple.driver.AppleUSBHub          4.5.0
    com.apple.driver.AppleRTC          1.4
    com.apple.nvenet          2.0.17
    com.apple.driver.AppleUSBOHCI          4.4.5
    com.apple.driver.AppleHPET          1.6
    com.apple.driver.AppleSmartBatteryManager          161.0.0
    com.apple.driver.AppleAHCIPort          2.2.0
    com.apple.driver.AppleUSBEHCI          4.5.0
    com.apple.driver.AppleACPIButtons          1.4
    com.apple.driver.AppleSMBIOS          1.7
    com.apple.driver.AppleACPIEC          1.4
    com.apple.driver.AppleAPIC          1.5
    com.apple.driver.AppleIntelCPUPowerManagementClient          167.0.0
    com.apple.nke.applicationfirewall          3.2.30
    com.apple.security.quarantine          1
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    com.apple.driver.AppleHIDKeyboard          152.3
    com.apple.driver.IOBluetoothHIDDriver          4.0.1f4
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    com.apple.iokit.IOEthernetAVBController          1.0.0d5
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    com.apple.iokit.IOFireWireIP          2.2.4
    com.apple.driver.AppleHDAController          2.1.3f7
    com.apple.iokit.IOHDAFamily          2.1.3f7
    com.apple.iokit.IOSurface          80.0
    com.apple.iokit.IOBluetoothSerialManager          4.0.1f4
    com.apple.iokit.IOSerialFamily          10.0.5
    com.apple.iokit.IOAudioFamily          1.8.3fc11
    com.apple.kext.OSvKernDSPLib          1.3
    com.apple.driver.ApplePolicyControl          3.0.16
    com.apple.driver.AppleGraphicsControl          3.0.16
    com.apple.driver.AppleBacklightExpert          1.0.3
    com.apple.iokit.IONDRVSupport          2.3.2
    com.apple.iokit.IOGraphicsFamily          2.3.2
    com.apple.driver.AppleSMC          3.1.1d8
    com.apple.driver.IOPlatformPluginFamily          4.7.5d4
    com.apple.driver.AppleSMBusPCI          1.0.10d0
    com.apple.driver.BroadcomUSBBluetoothHCIController          4.0.1f4
    com.apple.driver.AppleUSBBluetoothHCIController          4.0.1f4
    com.apple.iokit.IOBluetoothFamily          4.0.1f4
    com.apple.driver.AppleUSBMultitouch          227.1
    com.apple.iokit.IOUSBHIDDriver          4.4.5
    com.apple.iokit.IOSCSIBlockCommandsDevice          3.0.1
    com.apple.iokit.IOUSBMassStorageClass          3.0.0
    com.apple.driver.AppleUSBMergeNub          4.5.3
    com.apple.driver.AppleUSBComposite          3.9.0
    com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.0.1
    com.apple.iokit.IOBDStorageFamily          1.6
    com.apple.iokit.IODVDStorageFamily          1.7
    com.apple.iokit.IOCDStorageFamily          1.7
    com.apple.driver.XsanFilter          403
    com.apple.iokit.IOAHCISerialATAPI          2.0.1
    com.apple.iokit.IOSCSIArchitectureModelFamily          3.0.1
    com.apple.iokit.IOFireWireFamily          4.4.5
    com.apple.iokit.IO80211Family          411.1
    com.apple.iokit.IOUSBUserClient          4.5.3
    com.apple.iokit.IONetworkingFamily          2.0
    com.apple.driver.NVSMU          2.2.9
    com.apple.driver.AppleEFIRuntime          1.5.0
    com.apple.iokit.IOAHCIFamily          2.0.7
    com.apple.iokit.IOUSBFamily          4.5.3
    com.apple.iokit.IOHIDFamily          1.7.1
    com.apple.iokit.IOSMBusFamily          1.1
    com.apple.security.sandbox          165.3
    com.apple.kext.AppleMatch          1.0.0d1
    com.apple.security.TMSafetyNet          7
    com.apple.driver.DiskImages          331
    com.apple.iokit.IOStorageFamily          1.7
    com.apple.driver.AppleKeyStore          28.18
    com.apple.driver.AppleACPIPlatform          1.4
    com.apple.iokit.IOPCIFamily          2.6.7
    com.apple.iokit.IOACPIFamily          1.4

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