Europe has even more potentially society-ending challenges ahead than the United States, despite the creeping anti-science authoritarianism here at home. Among them:
1) Demographic crisis. Shared with the rest of the world, of course. And no, immigration won’t solve it. Their more-generous social safety net is going to need some re-vamping that will cause massive social unrest.
2) Islamization. Once a society becomes ~10% Muslim, it’s enough to throw it into chaos and often dissolve the existing culture. Many EU countries are getting close to this threshold or have exceeded it. And no matter what idiot feminists think, this will be very, very bad for women there.
3) Russia. It’ll be invading soon. Europe is not even close to any kind of ready.
4) Immigration of unattached economic anti-western migrant men. Even apart from Islamization, this is a huge issue and will be getting much worse.
5) AMOC collapse. This will make a lot of Europe a whole lot colder on average while having minimal effect on the US.
The US and China are best-positioned to endure and even prosper here. That is, assuming we in the US don’t strangle ourselves to death, which we are merrily on the way to doing by killing science, research and clean energy.
But Europe is pretty much fucked no matter what.