Worried about need to constantly repair disk permissions

Question

Here is my analysis and conclusions as to why I need to constantly repair disk permissions:
I recently got the top-o'-the-line iMac (see info below) which shipped with Lion but since I wanted Snow Leopard (just because I have a few PowerPC games that I can't live  without) I reformatted the hard drive - into 1 partition from the 2 that Lion had - and installed Snow Leopard and went back to business as usual....only with one **** great and fast computer. BTW, as far as I know this computer is exactly the same computer that shipped with Snow Leopard prior to Lion's introduction. I swore that I would never get another desktop computer because this one would last me forever. My only hesitation now is because the need to constantly repair permissions means something is not right. On the one hand I could just keep on repairing (daily?) the permissions for the next 20 years, or.... what? Is it possible (or should I be asking Apple itself instead of in this forum) that there is some other difference between the Snow Leopard and the Lion versions of  this iMac - is this what "firmware" is all about? - that produces this constant need to repair permissions? If that's the case, would Apple give me a Snow Leopard-friendly logic board (and/or install the correct firmware) in exchange for the Lion logic board - or am I just going to have to live with having to perform this permissions-update function? Or is having to repair disk permissions not a big deal or something worrying about? Any ideas would be appreciated - thanks!
Hardware Overview:
  Model Name:          iMac
  Model Identifier:          iMac12,2
  Processor Name:          Intel Core i7
  Processor Speed:          3.4 GHz
  Number Of Processors:          1
  Total Number Of Cores:          4
  L2 Cache (per core):          256 KB
  L3 Cache:          8 MB
  Memory:          12 GB
  Boot ROM Version:          IM121.0047.B0A
  SMC Version (system):          1.72f2
  Hardware UUID:          B9D5A82D-6205-5FDD-BE77-46CC72811374

Answer 1

You do not need to repair permissions unless there's a specific problem.
For your info;
http://support.apple.com/kb/TS1448