Only racing simulators and fighting games should run at 60fps, 30fps is perfectly fine for everything else.
Personally, next gen I'd like to see the standard be 1080p at 30fps with realistic motion blur effects with full Vsync enabled. I hate when games run at 60fps without any motion blur because they look jarring and unnatural as the brain expects to see blur when something moves fast. One thing that bothers me about Forza/GT is that they don't have any during gameplay but do when you watch a replay, the replays always look much more realistic and easy on the eyes as the motion blur helps our brain detect the sense of speed associated with cars moving fast.
If you skipped the boring stuff; 30 fps with motion blur >>>>>>>>>> 60fps without motion blur.







