Makes perfect sense that "casuals" (housewives, grandparents, etc.) play their console less. That's kinda the point. The most recent Wii ad I saw encouraged exactly that: a woman has breakfast, goes to work, picks up the kids from school, lives a normal busy fulfilling life, and like, does Wii-yoga or something for like 5 minutes. "It fits into your normal healthy non-gamer life!" or something. Of course that's a more appealing image than obsessive-gamer-rage, to the Wii's target market. Still, it kinda baffles me, cuz even tho the console is relatively cheap, it seems like these people are not getting their money's worth when they could just, y'know, watch an exercise video or go for a walk, for free.
That said, I've been borrowing a friend's Wii for a while now. It was gathering dust for him, and even tho I'm not the casual-yoga-supermom type, it only gathers slightly less for me. I agree with what a previous poster said about the lack of standard-controller controls being a turnoff. I just don't like the wiimote very much. I've got a gamecube controller, and I wish more games would let me use it. I play more gamecube games than Wii games on the damn thing. And I hate that creepy peaceful music on the Wii dashboard or whatever-you-call-it when you start the thing up. It's sometimes good for parties, cuz non-gamers will give it a chance, but even with the casual-friendly supposedly "natural" wiimote controls, it's me or one of the other "hardcore" gamers who always wins at Wiisports or Wario Warez or what have you. And within 20 minutes or so the casual types have gotten distracted by something else, and the video game types are bored with the lack of competition and wanna play Tekken or something instead.
*yawn*.. wow, that was a lot of "talking". Sorry about that. Um, so in conclusion, of course no-one plays their Wiis, and of course "vanilla" types buy a lot of them anyway, because that's the point; they buy it so they can not-play-it, so they can feel in-touch with technology but avoid being a crazy, dirty "gamer". And wiimote controls suck. Peace out.