I didn't buy a Wii until last year, but it's a cool system and I'm thankful for its support of older games. A third of the TG library was released for it and that's pretty cool. I remember we got a little uptick in traffic around here when it came out.
WiiWare wasn't bad either. They didn't make a Bonk game for it, but we got new entries for Adventure Island, Alien Crush, Bomberman, Gradius, Star Soldier, and non-TG lines like Contra, FF, Mega Man, etc.
As for buying Wii points, if you won't use your credit card for buying video games, why have a credit card?