The deal maker for me: Here in the US, folks tend to mind their own business, and when you do need someone else to mind your business for you, all you need is a credit card.
bigger house kids education is less stressful age discrimination is less in workplace, I mean, If I were 50, I believe there is still some company willing to hire me, but in China, probably nobody wants to hire me landscape is must better than China more trees and flowers in US