Wii and Kinect sucked because they tried translating predefined motions to button-presses, with no added benefit over pressing that button on a controller. And they weren't particularly good at it. You don't see how VR is different, have you even tried the Vive?

For the record I was hugely bearish on the Wii, Kinect, 3D tv and movies, and rightly so. But there is no question in my mind that VR will be huge.