"Trust is the raw material from which all types of money are minted".
You make a valid point, I do trust that our government will come to collect what's due from the citizens, but what about the corporations?
Worth noting there are quite a number of what are known as Community currencies still active in the US & Canada:
USA: https://en.m.wikipedia.org/wiki/List_of_community_currencies...
Canada: https://en.m.wikipedia.org/wiki/List_of_community_currencies...