Waiting is fine sometimes, but if things turn out like this generation for the Wii there is little point. First price drop three years in (I'm not waiting that long,) and my launch hardware still working great. True, libraries start lacking, but I'm more than happy playing things as they come.
In short Nintendo has done a lot to make early adoption appealing.
"You can never jump away from Conclusions. Getting back is not so easy. That's why we're so terribly crowded here."
Canby - The Phantom Tollbooth