One of the reasons I go back to my Wii is for the Virtual Console. A plethora of retro games to choose from guarantees you'll never be bored.
That was a huge selling point for me as well, initially.
But then a year later I started fixing up my older consoles/replacing/buying them, and now I never use my the virtual console. I also put emulators on my wii so if I want to play one of the games I own, I don't have to pay for another copy or wait for it to be released on the VC.
![Tongue :P](https://www.dreamtheaterforums.org/boards/Smileys/default/tongue.gif)
Still, if you don't have the older consoles and don't feel like putting the time, effort, or money into tracking down the games, the virtual console is a great alternative. I remember when I used it they would always release shitty games and would hold out on the good ones that everyone wanted... haven't checked it in awhile, I wonder what games have been released.
Also I dunno about anyone else, but the best part of the wii for me is the multiplayer games. I very rarely play video games when I'm alone, so the games that I tend to want/buy are the ones that are fun to play with a couple of friends. That seems to be what the wii specializes in. The only games off the top of my head that I ever play(ed) for the wii on my own were Metroid Prime, Animal Crossing, and Twilight Princess. All the other games I have were fun to play with others.