I've had all three previous gen consoles, preferred the XBox for graphics/sounds, PS2 for game selection, and Cube for fun. In the long run, XBox was just another computer so I didn't need it anymore, PS2 just sucked, but kept the Cube cuz I still have fun (nothing beats Mario Kart).
As for the new gen consoles, skipping 360 and PS3, like I said before, they're just computers, very expensive computers. And honestly speaking, why would I want to watch/play HD stuff, DVDs, music, etc. when I have all the dedicated equipment anyway!?!
All I wanna do is play video games, and that's exactly what the Nintendo Wii is gonna do, and interactively too! See the controller and gameplay? And the option to download classic games like Donkey Kong and Bubble Bobble! The only thing the Wii is gonna screwup on is HD, which it doesn't have.