> All the people talking about being unable to handle/comprehend the death of their child, and especially the one line of conversations about the impact of losing one child when you have many more, made me think about something. For most of human history, losing some children was expected. Child mortality rates for most of our history have been abysmal.
Exactly, the preciousness of childhood and children in general is a more modern trend. Certainly our ancestral parents felt the loss, but not nearly so keenly because they still had to focus on feeding the rest of the family.
And it is absolutely related to the drop in child mortality. Falling child mortality leads to less need to have fewer children since they're more likely to survive. This leads to families with fewer children (a trend seen world-wide), and each family invests more heavily in the children they have. It very much looks like loss aversion and the sunk cost fallacy.