> The latter experience can be given to the former's population.

How? Keep in mind only a small fraction of the world's population is even capable of being a tourist. Imagine how that changes when everyone is well-off enough to travel at will. Imagine your favorite beach, favorite museum, or your favorite national park and multiply the number of visitors by 10, 20, 40, etc. Waiting-lists for years to visit the Louvre. Prices so high that only the 1% of the 1% can afford to visit Maui.

Maybe you are assuming that VR will solve these issues? Perhaps a Matrix-like future awaits us.

Most of us discussing this are already living a Matrix-like reality. 80%+ of life in front of a screen, with that last bit of time at the gym (with screens), cafe/bar (with screens), or maybe an inner-city park (with cellphone screen out). A diet primarily consisting of processed grain, factory meat and barren vegetation. Blaming our inevitable neuroticism on a chemical imbalance or moral failure, not the alienated zoo life we live -- or worse, distracting ourselves so thoroughly we don't notice it. Of course this kind of person is going to think we can fit billions more on the planet.

Our wellbeing probably does rely on technology like VR and automation, but with so many mentally ill, I would say our current situation is already unacceptable (and has been for thousands of years). Adding billions more to the equation isn't going to help.