Hey, I find it odd how people are so in favour of being able to see your own feet in first person view, but that's just me.
People definitely have different preferences, and rightfully so.
It's just that I think a game should reward you with the gameplay, story and feel, not some pointless and meaningless "rewards" like achievements.
Example: You should not be rewarded with an achievement for reading all books in the game, the reward is the stories and lore those books contain.
It certainly doesn't help that most achievements are stupid, like "Reach level 10", "Kill 100 enemies" or "Kill your first boss". Stuff that you do anyway, just playing the game.
As for seeing your own body and feet in first person, have you ever played a game where they did that?
Personally, I feel it makes your character feel so much more real, the same way casting a shadow does, or how sprinting makes your character pant. You are not just a floating camera.
Sadly, I can only remember having played one game recently which has this, which was Mirror's Edge. But this is offtopic!