Doesn't look too happy to me -- maybe because I'm over 30 and would be dead. Also, I loved my mother (who is dead) -- but at least she didn't die in childbirth.

https://en.m.wikipedia.org/wiki/Life_expectancy

Life expectancy at birth was low because of high children mortality. If you've made it to adolescence, you could expect to live 50-80 years.

https://condensedscience.wordpress.com/2011/06/28/life-expec...

Losing many of my children, wives, and loved ones sure would make me sad.

It would surely make you sad, if you had time-traveled there. If you had been living there, you probably would be a bit more fatalistic and willing to accept untimely deaths as a part of natural order, having no experience of better life.

Does your logic also apply to the millions of people living in slavery and profound poverty today?

I concede that people adjust their expectations to norms that surround them. But I also feel there are certain floors in the human condition -- the death of a child being one of those rock bottoms.