You are trying to paint a portrait of Americans in general that is flagrantly false.
Much evidence points to the sentiment that the US behaves like a modern-day Rome and has attempted (or is attempting) to achieve “Pax Americana” globally. Again, not necessarily a bad concept as the world could always use more stability.
Many people explicitly hate this and want to see money diverted from that to stuff like education, etc.
Americans aren't one singular unit that agree on issues, especially things like foreign policy.
I'm not even saying the US overseas forces are bad. They've been misused, yes, but I don't want to argue about that - it's complicated. To disclaim America's outsize global ambitions, however - for whatever purpose - is just laughable.
In fact I hear more about Cascadia or Texas seceding than I do about the USA adding new states or territories.