I have had these feelings since I touched computers in the 80s and more so when 3d ish stuff started to become out in the 90s. I would walk to university with my best friend and we would try to describe the world in the form of 3d primitives with 'effects' (did not know shaders back then). Since I had the Oculus and recently the PSVR, we (that same friend recently moved to the tiny mountain village as I, 2500km from our home town) can see that soon (for many already, but some people are more sensitive to it than others, like said, I never even needed VR or fancy graphics to feel reality while playing) brains will find it impossible to find the difference between that and reality. Playing simple games on psvr for more than a few minutes, for me, is real; I can feel movement, I get scared of dropping of cliffs; in rush of blood, my brain adds wind and smell even. And I am not the only one; on my birthday a few days ago, I had complete computer illiterate people who never played games try and; one got ill straight away, two said it looked fake, but at least 4 ask how it was possible to feel movement and wind while sitting in a chair or feel like you might drop of an edge or feel real and actual dread while getting pulled deeper into the experience. That makes me see we are finally there (sure, if you are a gamesgeek you complain about framerate and resolution but that will improve rapidly now that there is money in it) and I know now what my next company is going to do.

Edit; I also do see the kind of sadness some people describe after lsd/shrooms; the real world disappoints. It is literally going from something like Disneyworld straight to your own boring appartment the second you take off the helmet. Hell, new rides in theme parks are infested with VR; if you can have one of those robot chairs in your livingroom you actually have a modern themepark at home.