I don't regret buying a Wii because I haven't bought one. I am a fan of Wii Sports, though. It's fun playing it at my friend's house. I wasn't a fan of Super Mario Galaxy, though. The camera annoyed me way too much to enjoy it. It's like they copy and pasted the camera script from Super Mario 64 and said, "Good enough." They obviously didn't factor in the possibility that you aren't always going to be walking on a flat plane. In a game where you're only walking on tiny spheres most of the time, this is a huge flaw into what would otherwise be a great game. Unfortunately, this is a flaw that can't be ignored because it's always staring you in the face from the very beginning of the game.
I did like Mario Kart Wii, though. It takes a little time to get used to the controls, but I did enjoy it. Not as good as Double Dash, though.
I really want to play Super Smash Bros. Brawl, Klonoa, and maybe a little Punch Out. I sucked at the NES version, so I'll probably suck just as badly at the Wii version.