PC gaming is overrated.
Don't get me wrong, I love my PC, and I love the games on it. But I tire of hearing about how vastly superior the PC is for gaming than a console.
Both is obviously the way to go, why limit yourself and your gaming potential?
However, if I had to choose Xbox gaming or PC gaming, I'd go with my Xbox, because it:
A) is on a bigger screen
B) is more portable if we want a LAN party
C) is easier to set UP a LAN party
D) Never needs upgraded
E) Never has compatibility issues
F) Is easier to play with real life friends.
I could probably name more, but that'll do.