I still have my pc, it's got pretty decent hardware and as said you don't need the latest and greatest gfx card etc to play new games
there's just something about the console that is more 'fun' for me though,
got my pc hooked up to the tv and a 360 pad but it still feels better playing the games on the console somehow, eben though the gfx of the pc are better
think it's a kinda subliminal thing, cos you know when playing the xbox it's the same for everyone that's playing it, nothing to do with multiplayer online either,
with the pc, even if i'm happy with the settings I think it's always in the back of my mind!