This question can tell a lot about you.
Which keys of your keyboard are most worn out?
For my part, the E, A, R, I, O, L, N, M are gone. Toast. Also the tops of the < and > are out. And it looks like I'm losing S, D, F, C, V, W and T's not looking all that healthy, either.
My number pad, however (as well as all my function keys) are in pristine condition-- some even need dusting.
This makes sense to me because I'm a writer and almost never think to use the ctrl functions (beyond the ubiquitious ctrl-a, ctrl-c and ctrl-v (select all, copy and paste), nor most of the other functions. I just type. Plain and simple.
What about you?