Everyone was laughing on Ray Diallo when he said his famous phrase "cash is trash" on 2019 and they even laughed more when his hedge fund tanked 30% under water on early 2020. guess what, US stock markets are bullish again and on a stunning V-shaped recovery and Gold recently hit all time high and bitcoin of course in its way to break new price record. So, who's laughing now!. he was damn right.
So what you are trying to tell, cash is a legal tender and i consider bitcoin as a legal tender as well as both have the same properties but on have a blockchain trial while the currency minted by the government does not have that kind of transparency even though every coin minted will have a serial number. You cannot live without fiat currency and it is a fact as you cannot expect everyone to move their entire transaction in bitcoin