"Why does Jim exist?" Forgive me for being blunt, but I think it might be winter.
Using resources to chase low-probability goods in a sharply resource constrained environment is a lethal strategy. See also: why being rich makes it easier to strike oil when investing, aka the Risk Premium.
We've had such a fortunate run the last few decades that we've forgotten just how potent a skill "holing up" was, and likely will be again. Psychological illnesses like depression, maybe a similar reason for passing the great evolutionary filter.