Oculus sold 2 of every 3 VR headsets last quarter. If there's a lesson here, it's that you can't extrapolate mass market appeal from what early adopters think.
VR and AR is still in its early adoption phase. It's too early to make any predictions about which VR/AR platforms or products will ultimately have mass market appeal. As an analogy, none of the biggest smartphone manufactures in 2004 really ended up mattering in the long run.
I wonder how many are still actively being used. I bought the Oculus quest early on. Spent a bunch on different games, hooked it up and played PC VR games. Used it nearly daily for a few months but have since given it away. Partly due to the current limitations of VR tech (it's heavy, screen resolution is still very low, need a large space to really play it) as well as now having to use a Facebook account.