I get the impression that people don’t like the fact our military is as big as it is. And “Why are you over here in $country?”
If Trump actually executes what I believe most conservatives want and we pull back from being the world police, people will quickly realize the value. It just might be too late by that point.
That depends on the country and local experience with the US, which differes a lot. When it comes to Europe, US presence in NATO is crucial for the region’s security since WW2.