Studies have shown that mental health often improves in war zones where one's life is reduced in complexity, but with major things to resolve. In the book Tribe, for example, Junger talks about how people who were catatonic in mental hospitals before the war suddenly came awake during the Blitz and were driving ambulances, among other jobs.

Now we have a million spinning plates at once, and our brains are more evolved for things like fighting off the wolves attacking the livestock or three weeks of intense harvest time, followed by a huge reduction in stress and complexity.