I both Agree and Disagree with PaleHorse...
For one, I already own a PS2, and have had one for about a year. I also own three computers (two desktop and one laptop).
Like Palehorse, I have the computers for my "in-depth" games, and spend most of my time on the computer...
As for my PS2, I have it for two reasons... it is better for multiple people and when friends come over (of course my computers are on a lan, and nothing beats head to head deathmatches), but nothing beats a PS2 for sports or fighting games... one other thing, my PS2 also doubles as an extra and portable DVD player.
None of the above pertain to the Gamecube, which is where I disagree with PaleHorse... first of all, it uses minidisks, and cannot be used for DVDs... secondly, as the Gamecube is SQUARELY focused at teenie-boppers for games, it will be releasing a lot more Mario/Zelda/Pokemon games then it will ever release Dead or Alive, Twisted Metal or Madden 2002... frankly I'm well past my Pokemon stage (never had one actually). PS2 is more for the older crowd than the Gamecube... as for the XBox, it's more a cross between a PS2 and a Computer... I already have a computer, so I think I'm served best with the PS2.