It’s also not that easy to get visas for decent places to live.
The American passport is incredibly strong, we get Visa On Arrival to Japan and Korea, 3 month e-visa for Vietnam, and the application is a pain in the ass, but americans get a 90 day/10 year tourist visa for China if you apply in America (but you have to be near one of the visa centers), and 60 day/10 year if you apply in Vietnam, Seoul, or Tokyo.