I don't really know where to ask this question, and how to name it properly in short. But here:
As I read through historical literature about middle ages it seemed like the dark times: constant wars, people starving, high rates of mortality, exceptionally from plague in Europe. As I asked my wife (she's a future doctor) why does a baby require so much purity, Especially when women give birth nowadays, it continues about 12 hours in a hospital in conditions close to sterile.
But I don't think, that in middle ages there were hospitals. And now the escalation: also the Europe was unclean country -> and what about peasants, they could only hope for medical treatment -> giving thoughts about extreme amounts of diseases flying around how did humanity even survive all the extreme conditions of that time? (I can't say much about aristocracy, because despite their ill looks they received medical treatment)
And here is a summary: If giving birth and child raising is so sensitive to conditions like purity and health, why haven't Europe just vanished in, say, 100 years? How did women bring a child into the world in such chaos? Because for me the probability of success (that means a child was born and mother is not dead and can continue making babies, sorry for such explanation) is miserable compare to probability of death from disease or a war loss.