One other draw back

I forgot to list earlier. When times have gotten rough in the past the US government has declared it illegal to own gold bullion (from 1933 to 1974 it was illegal for U.S. citizens to own gold in the form of gold bullion, without a special license) and took it from everyone that did not have that license. If they did it once, there is nothing to keep them from doing it again. They might change the currency, they’ve done that more than once, but they have always done a replacement for the old currency with the new currency.