I don't know if Democrats will restart those programs. I think the realpolitik of what these midterms actually mean is that Trump is no longer a "kingmaker" in his party, and without that leverage he won't have control over every Republican in congress. And because of that, he's going to have to behave or risk getting removed or possibly worse.
I don't know what the exact path forward is, but it's not like nuclear weapons will disappear if the U.S. dissolves. There's still inherent problems of the human condition that we have to continue to struggle with as a species, IMO. Even if we wipe out all of the existing imperialist states, more could -- and IMO, would -- arise unless we figure out how to solve some of those underlying problems.
In the meantime, I think it's easy to lose sight of the fact that things have gotten better over time. This last vote was refutation of imperialism. They said themselves, it was a reflection of dissatisfaction with the imperialist war in Iran. If we don't believe in democracy, then what do we believe in, exactly? Do we just cross our fingers and hope we get benevolent dictators? Granted it took far too long, but the imperialist country did eventually give up slavery. Racism has objectively decreased over time. A smaller portion of the world dies from starvation and preventable disease. The world is getting better over time. The past 10 years have been a shitshow, but the median person is certainly better off today than they were 100 years ago.