I remember growing up in the 90's and it being fairly common to think that there were no real enemies out in the world, that all the conflicts were over. "The end of history," gets mocked a lot, but the idea of putting conflict behind us and working together towards a common cause of advancing together is something I really miss.
But if that period of relative peace had continued, then people would've started asking questions about why we're still dumping more money into our military than the next 9 countries combined when the USSR no longer exists (to quote Terminator 2, "They're our friends now") and China such a big trading partner that nobody would dream of rocking the boat. And if people started asking those questions, it'd be real bad news for the war profiteers who make bank off that spending. And so it all went out the window, starting with the "war on terror," and now the government's trying to make us see everybody as a threat.
And so we can't have nice things, like healthcare, we all have to tighten our belts so that we can make more tanks. I remember when that was seen as right-wing.