Someone mentioned this up above, but I’ll repeat it: beware of any asset price that can be manipulated by govt power. Long Treasury prices can be kept high. It’s the dollar that, in the end, will drop. Short of third-world currency controls, the exchange rate cannot be manipulated as easily as internal US financial instruments.
My personal bet is on the Yen as a safe store of value for the next 5-10 years as inflation is engineered in much of the rest of the world.