I think Soshi Kitai touched on this. Miyamoto never said Wii Fit is an alternative to exercise, but rather, something to get people interested in fitness, and aid people in becoming "fit". And fitness is not necesarrily equatable with weight loss. There have been internet experiments with Wii Fit that have resulted in weight loss if I am correct, but I still wouldn't quite call it a completely viable means of that. Again though, that's not the goal.Right on the money.
If you guys want to play video games and stay fit, get yourself DDR and don't look back. End of that story.
Hmm..I think gyms can be a bit intimidating for some people, and people like me aren't nearly within proximity of one. Wii Fit is convenient in that sense.Why waste money on "WiiFit" when you can go to the gym yourself. But I guess people will always like their alternatives to getting in shape.
On a side note, IGN recently had an interview with a fitness trainer on how effective Wii Fit could be, and while he didn't totally buy into everything about it, he also had positive things to say as well. Here is the article if anyone wants to read it.