The only thing keeping me from switching back to iPhone is the lack of haptic feedback. This feature is incredibly important to me, and it irritates me they can't input such a basic software feature.
Haptic feedback is dope. Love it on my S2. I don't think it flows well with the iOS theme, and it wouldn't fit in at all with how iOS7 works. Also it might be for battery concerns. Vibrations kill battery to a certain degree. One of those "if you want to make the most of your battery" tips is to turn off haptic feedback.
Definitely not a deal-breaker feature though, as already noted.