There is only a certain amount of gold & silver on the planet, I really don't think it makes much difference what the money is made of as long as it's an accepted form. There is far more U.S. money to ever be worth gold again, everyone would need an electron microscope to be able to see their 5K piece of gold dust. Maybe that's why they keep looking for that golden planet, it's said that the gold on earth is from asteroid strikes, once all is found there ain't no more. For something that so many here deem as worthless I don't see anyone throwing it away or refusing to accept it. By throwing it away I mean literally not just buying crap they don't need.
Right now, an ounce of gold is "worth" just over 1700 Federal reserve Notes so saying that there will never be enough misses the point behind hard money.
Hard money tends to hold or increase in value so your purchasing power stays the same or goes up.
How do you think Ford was able to halve the price of a Model T during it's production run? It wasn't *JUST* cost saving from production efficiency. There was a time in this country when we trend toward deflation slightly.
The same amount of money in circulation but a boom in the number of things produced drives the price of each unit down.
Now Apple can make billions of iPhones and get higher prices for them because Helicopter Ben is churning out dollars faster than a 12 year old Chinaman can assemble electronic gizmos.