No I know how shitty human existence was, and not that long ago. But they had a reason to keep going. People forget, the wild West was only a couple hundred years ago. We were savages. Life expectancy and suffering don't equate to happiness. I suppose when I say happiness, I really mean "meaning"
People would be a lot happier today if they had more kids. Again, people in undeveloped nations, with low life expectancy, very very hard existences, are happier than a lot of westerners that have nice cushy lives.