A side effect of losing touch with the physical world is that it wrecks your brain. You begin to feel isolated from the rest of the world. What doesn't help is the growth of cities, and overpopulation. We start to view other people as competitors and enemies. Have you ever gone through some days when you encounter many people, whether it's in a commute, or whatever and ask why people are so useless in your life? What…
Hold that thought.
> In the past, we had tribes.
And different tribes were enemies and competitors.
And, if you don't think that there's competition in a tribe of humans, you're claiming that groups of humans are different from every other group of animals. (Simple example - even in tribes, 40% of males don't have genetic children while only 20% of females are dead ends. That's not all boys dying before breeding age.)