The more people who get one and post positive feedback here, the more the others will fall like a house of cards. Then again, negative feedback could burst the virtuous circle.
I think regarding the exercise aspect, you have to build in a routine like any exercise regime. The difference is that in VR it is way less boring and therefore reduces the barrier to entry of getting it done. And some things, like Ping Pong and Beat Saber give exercise as a side benefit, rather than it being the main goal.
Regarding doing exercise with some big bulky thing on your head, obviously it is better without it. But it is not as bad a hinderance as I feared. Or in other words, it works. The balance between head bulk and immersive motivation makes the equation a win for VR.