Are you sure? Where do you think the current path of the US is taking its citizens and the rest of the world? Wars are awful and a nuclear war would especially be so, but taking the slow road to an authoritarian state controlled by unknown forces hidden from view has the potential to be much worse. Think of your ideological worldview, now think of those who are the opposite. What happens if that group ends up in control without you even noticing it happening until it becomes a capital offense to point it out?

This is much easier to say if you're not living in any of its victim states, or under the boots of any of the vicious autocrats the US props up.

Also, it's not like nuclear proliferation is solved. It's still breathing down our necks, we just don't talk about it anymore

It's the worst hegemony...except for all of the others. It doesn't have to be perfect.

Wouldn't there be no nuclear proliferation if the U.S. failed? Who designs weapons systems for NATO? The entire nuclear arms race wouldn't have happened if the U.S. didn't use the strategic bombing of citizens as a foreign policy platform 80 years ago.