I have said it a number of times on this forum. we definitely need to refocus our efforts, things aren't working out like they should. But that doesn't mean we pull off the world stage. China is a perfect example of the success of what we are trying to do everywhere. but it doesn't mean we let China/whoever take over a region and undo all the work/money we have put into these areas. Is it crazy we are defensive with our investments and protective of our friends/allies?
again this isn't selfless help of Poland. the idea is that we see real benefits as well but not as soon as Poland or whoever does. and despite what you believe the US has made a real difference in the world since the wall fell. look at any measuring stick for people's lifestyle, its gone up. and yeah we are seeing an uptick in violence, but it is still well below historical levels.
I still think we can do both, fix our own economy and stay involved in the world. As I have said we need to step back from a leadership role and into a partnership identity that China has adopted with the world. and at home we aren't changing until the hard choices are made, pulling off the world stage won't make those happen any easier.
it may be hard to see but our constant involvement is not only building up the world and ourselves, but also keeping major wars in check. Its a fundamental question you have to answer for yourself but would you rather have these pinprick conflicts, expensive in money but not so much in lives, or the generational major wars?
imo its better to do anything we can to avoid those total war situations we found ourselves in.