Comment: We barely have "paper money" already

Most people use debit cards, and many pay a higher price already and don't think twice about it. If "credit" gets shut down, debit cards are going to be caught in the crossfire, I would think, and that could cause a flight to paper.
You're comment above is similar to my views. I keep saying the public will figure it out when Bob the Electrician orders a roll of silver wire and can't get it. When the people who rely on real, physical metal to do real work can't get it, it is on.