in other words, shorting the dollar. it's the same reason you buy just about any asset that's not bonds or cash AKA real assets. People know, it's only a matter of time before the feds default on the value of the dollar.
i mean by having inflation run hot at 5-10% for many years or decades, they're defaulting on their obligation to provide a stable value currency for the people.
Default is different, it's an inability to pay debts. They have no problem printing more dollars and paying debts.