I think another interesting factor is that hardly anyone dies before a reasonably ripe age these days. We take for granted that we will have the full course of

I think another interesting factor is that hardly anyone dies before a reasonably ripe age these days. We take for granted that we will have the full course of life. When (e.g. in the 1800s) a typical person has at least one sibling die before adulthood, it throws the fundamental uncertainties into sharp relief. Not saying that's a good thing, but it is different.