Well, I stand amongst those who didn't care for the gamecube. And there's alot of us.
World wide PS2 Sales - 113,000,000
Worldwide XBox Sales - 26,000,000
Worldwide Gamecube Sales - 21,630,000
Worldwide Dreamcast Sales - 10,000,000
The gamecube had a very clunky controller, and almost no third party support. I'm glad I got my wii so I can go back and play the half dozen in-house titles that I wanted, but there was never a game that made me go out and buy the system even in it's prime.
And for the record, I've owned every nintendo system released in America since 1989 (nintendo included) *except* the gamecube, that one just had no appeal to me. :/ Not when PS2 was giving me Devil May Cry, Ratchet and Clank, and Jak.
Rant aside, the gamecube will probably get a few half-assed ports and move licenses here and there for the next year or two, but it's just good business for Nintendo to throw their weight behind a system that's already sold 10,000,000 units worldwide.
But hey, on the bright side, another decade down the road and we'll be downloading Gamecube games to the virtual console of the future! And then we'll take our hover cars to work! (C'mon, they gotta have flying cars by the year 2018!)