The Chinese and other countries don't take those American dollars and bury or burn them.
They spend them on the things we do here, technology, development and services.
Among other things.
They lose money if they do.
You're viewing there standard of living through your bias.
Everyone in the world can not live like an American can.
There isn't enough energy and stuff.
What if the American who lost his/her job, is a criminal?
What if the foreign person is the father of a child who creates a cure for cancer?