The US is interesting in that regard as you can sample high trust & low trust micro-societies within an hour of each other.
A lot of "NY/SF or nowhere" types have forgotten their prior lives, or simply never lived outside their bubble. I have many friends like this in NY and I find the "global citizen but only leave my city when I take a jet to another country" demographic fascinating.
Living in NYC or SF is great, but you know there's more to the world than your downtown condo & the same dozen European/Asian cities and tropical resorts you fly to 1-3 times/year.
You may find that the surrounding "nowhere", "flyover country" and "the burbs" you frown upon do bring something to the table and at least are worth experiencing from time to time. You may find it does almost feel like another country in some respects.