As bad as our problems are with the dollar, no rival currency exists which doesn't have a worse problem. The real only alternatives are gold and bitcoin. And crypto currency has its own problems. I'd hate to have a billion in bitcoin in Chinal and piss of Xi and he raids your house/business seizes your computers and then tortures out you password and voila - gone. So at least with the dollar you get liquidity. But the dollar will not be a good choice if Team Dazzler gets control of the federal government and institutes their anti-capitalist policies. Then kiss it good bye.