so keep playing with your PS2 as the gaming is basicaly the same ^^
seriously, i have a Wii and it's a real revolution in the way to play . but that's right : not the same games as on HD entertainment video systems.
I'm not an hard core gamer but I'm playing video game since Atari "pong" (78 if i remember).
played with Intlivision (not sur the name was the same in USA, it was made by Mattel), Nintendo Nes, Super Nes, Genesis, Game boy, Playstation, PS2, nintendo DS (4 at home!!) and now the Wii. I never have so much fun than with the Wii and DS...
But if I had to buy a PS3 or Xbox360, it will be PS3.. Because all the old ps games will work on.