This doesn't help that much because cash today is also useless without electricity. You can't go to a bank anymore to get cash from an actual person. The machines run on electricity.
I had cash and zero problems. Many had no cash and many problems.
You specifically mentioned banking as a problem and I mentioned a specific solution. Based in real life, not fantasy.
I am arguing your point and you are attacking me rather than making a point of your own.
It's not a fair characterisation that cash is useless without electricity because once you have it(presumably before the electricity stops) then you can still transact with it.