Actually, I've seen the take that the previous poster has made too. The wikipedia page is pretty good IMO. Proof of a hypothetical future event is pretty hard to get, but here's the wiki rabbit hole (if you're anything like me you'll find this fascinating and spend the next couple hours clicking links - you're welcome!).

https://en.wikipedia.org/wiki/Nuclear_holocaust#Likelihood_o...

Annie Jacobsen is awesome, her book about Area 51 was riveting, but I also cannot unsee "Capitalist Realism" and the idea that we keep picturing civilization-ending catastrophes because we don't want to go to work in the morning, and walking/biking everywhere and living in a small community is amazingly appealing to us at a base level. We yearn for the lifestyle of the apocalypse survivor, but none of us want to go through the apocalypse. Generally, I think we kind of say, "oh, it'll be the end of the world" because most of us (myself included) lack the imagination to really look beyond linear extrapolations of the status quo most of the time.

It's easier to imagine the end of the world than the end of capitalism.