Cursor? I use them in driving games and RTS, but everything else is WASD. Imagine its the same for all our (sub 20's) generation.
I have a friend (well, acquaintance) who's 28 now, and can't game using WASD because he grew up using cursor arrows xD
And if you use the arrow keys, do you also use some of the surrounding keys for other functions? namely the 0/1/4 numpad keys?