[eggbert12]

I’d be careful to suggest it has so much to do with “real factors” like relative safety to ease of survival and more with cultural effects. We see this observationally as subsets of the US have lifelong marriage rates in the 90%s, specifically religious communities.

I don’t recall the exact numbers but even just considering how many sexual partners people have can drastically change average likelihood of eventually divorce - with virgin couples above 80% AFAIK (some overlap with religious communities likely). Even a few decades ago when survival was still pretty easy marriage had higher success rates.

The culture probably has a lot more to do with the rate of successful marriages than our safety or lifespan