I already have a computer, so why not buy the $50 game (or less, if its on sale) for that, rather than go out and spend $300-400 on a game system, controllers, and then another $50-60 for the same game???
We have a Wii, but my fiance bought that, and I've only bought 2 games for it, both used.
I tend to prefer PC games vs console games. The only advantage of the console games is that you get to play with a big tv instead of a smaller computer monitor.