You just described everything wrong with cars when they first came out. Large, uncomfortable, slow, needed expensive infrastructure/hardware. And look at cars now. Size hasn't improved, but everything else has (well, the infrastructure is in place now), and you can't get away from them.
Im saving up for a Steam Frame. Even if it just operates as a screen for my Steam Deck, that's enough for me. Add in some freestanding VR, and maybe a new computer that can handle VR in the future, and I'm as happy as can be.
I'm not saying your opinion is wrong, just not universal, and we are still very early on in the VR/AR market.