[V__]

Maybe not a large part of the humans living now, but the next generation won't have it easy. I don't think that it's prudent to look at past events for two reasons: Population size and in-/dependence. There are a lot more humans now, than in the past. The year 0 is estimated to have had a population of about 170 to 400 million and about half for every 1000 years before that. It is a lot easier for smaller independent populations to move to a new place and start over, especially when most of them are hunter-gatherers or simple farmers. Their lives didn't change that much.

What will a population of 8 billion interconnected and dependent people do? They can't all move to a new place, they can't all farm for themselves. Just the war in Ukraine caused significant food insecurity due to higher grain prices and lower export numbers in some poorer countries. Now imagine such problems on a global scale.