The Wii was a huge success for Nintendo, in terms of profit for the company. They started off, as they normally do, something new and fresh, but the idea and concept didn't really agree with the 'hardcore' gamers, but they brought in a fresh new crowd, which is what they seem to do.
Now, a year or two down the line, Sony and Microsoft made their own versions, which felt rushed, in my opinion, as they are still trying to bring out decent content for them and still have a way to go, in my opinion.
I am an old fashioned gamer; if I wanted to be active and jump around, I would go the gym. I like to sit with a controller and enjoy the game and not the physical actions I have to put into it.