[elliotec]

> There is not enough sand in the world to build huge living spaces for everybody.

This is an absurd statement. There is beyond enough sand, dirt, and land in the world for way more than all of the humans that have ever existed to have plenty of living space. The real (and in this context, irrelevant) question is - should we use it? There is enough.

> Why would somebody buy a big monitor or TV for gaming if they can have 3D for less?

Because the 3D experience as it stands is frankly pretty cumbersome and nauseating. VR is tolerable in short and focused stints. Humans currently need actual reality and the aforementioned living space for health and sanity.

[tkk23]

>The real (and in this context, irrelevant) question is - should we use it? There is enough.

You are technical correct but my point still stands. If the answer is no because we don't mine enough rivers and beaches, and we don't relocate enough of humanity, how will there be enough living space that people don't seek a distraction?