Why don't you think US dollars won't?
The reality is, US dollars will, and everyone pretending they are imaginary is insane.
It’s not a matter of whether gold or paper will buy something or NOT buy something. It’s a matter of how much. But, on second thought, you’re probably right. I’m insane.
“US dollars” assumes that there exists a political entity called “The United States of America” that effectively backs up the value of said dollar. There is no reason to believe that will always be the case. For example, why isn’t there much trade in things like CSA dollars? How much trade today is done in things like French Francs?