For a long time in many places, living in grinding poverty was and is "normal" and "natural" for most people. Living with all sorts of insecurity - food, physical safety, shelter - all normal. Evolution only selected for those of us who manage to reproduce individually and societally, not for those who tend to live to a ripe old age with a minimum of misery. I really don't get this formulation of "x miserable condition is perfectly natural!" when "natural" so often == "miserable".