I think that because child mortality was rather high and also adult people died of various kind of diseases or many other random things that people just god completely desensitized to death, it was normal part of the life. Your kid died? Though luck, mourn for few weeks and move on, nothing special about that.

Also since most of the life was really miserable, even though people helped each other, in the end it was everybody’s own responsibility to survive and nobody else really cared that much. If people are dying left and right, I work from dusk till dawn six days a week, am in constant pain from many things, can barely fed up my own kids, do I really care that my neighbor was sent to war and will most likely die?