well, quite simple really: more easy to transport to friends' houses, don't need to set up controls, and it doesnt take up as much space, and...some of the games you may like on it, are not available, or are quite lame on, pc....for instance, have you (legally) played soul calibur 2 on your computer? Some games belong on consoles, others belong on PC.
It's always been about the games to me, not which console's bleep is bigger. -_-
"Without strife, the victory has no meaning. Without strife, one does not advance. Without strife, there is only stagnation."