Welcome to the site!
Allow me to make my pitch: I've owned every Nintendo except for the Gameboy, and really thought the Wii was an excellent console. I have not purchased a Wii U, and very likely won't until X comes out. It's going to have even less third-party games than Nintendo's previous three home consoles, and Nintendo's first-party output seems to be slowing this generation. On the other hand, it'll probably still be the best local multiplayer console.
Hope that helps!