With me, it is also about the games. I have a different opinion on what is good though. Most games either aren't worth playing regardless of what system they are on, or they are on every system. Because of this, I don't have to decide if I want to play certain games because they are on all consoles. My only decision is whether I want to play Super Smash Bros. Melee or GTA Vice City, and even though GTA is an awesome game, it's one player, which is 3 less than needed for people who have friends over.
If you think the Gamecube doesn't have good enough games, pick up a Nintendo Power. Along with normal games like FIFA and MLB, I read a review about a game called Odama: http://www.nintendo.com/gamemini?gam...e-f9cc96c02b1a
My thoughts on the N64 on similar. I played N64 more than PSX and even though I don't think I had a very good childhood at all, I can say that spending hours playing 4 player Goldeneye with my friend and his siblings listening to Blink 182, Korn and Papa Roach (no matter how dumb they are) was some of the best times of my life. I'm still playing SM64. I never played Perfect Dark though.