Why doesn't Photoshop always generate a layer mask

I believe it was in CS4 that Adobe expanded the use of automatic layer masks ... perhaps it was with adjustment layers (I'm not quite sure)
I don't know about others, but it would save me considerable time in the long run if every new layer, (whether it is generated as a copy, from a plug-in, as a cut, or as a new blank layer) recevied an automatic layer mask. It takes no file space, but more often than not I find myself needing one. It sure would be nice to jump right into masking rather than having to first create the layer mask. Why did they stop at adjustment layers?
Am I alone in this?
thanks

Adding layers like Text, Raster and smart objects never have had automatic layers mask added. Adding adjustment layers always came with an automatic layer mask until CS4. Adode introduced bugs in CS4 when they added the adjustment panel these bugs have been carried forward into CS5 and CS6. Adobe added two options in the adjustment panels fly-out panel. These options are designed to be global, not just adjustment panel options. These options only work sometimes when changed from their default settings. When changed from their default settings they try to change Photoshop historic default operation. When you change Photoshop default operation Action, Scripts and Plug-ins that add adjustment layers may not work correctly. Adobe should fix Photoshop and remove the two bad Adjustment Panel fly-out options. The Adjustment Panel fly-out menu option to not add Layer masks can not be safely set, same goes for the option to always clip added layer mask, if you use Actions, Scripts and Plug-ins that add adjustment layers.

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