I think, no matter what, we still need some form of cash...one burp from the sun or some earthling humanoid and electronic cash is out the door.
With our shields down 25% (expected in 2022) it won't take much of a burp to crash servers, radar, gps and the like...not to mention our power grid.
Let's hope it's much less than a Carrington event. We are bound to get at least a few during this last solar max before the Grand Solar Minimum takes hold.

When/if we go cashless it's over, I think. Everybody will be at the will of the deep state. I used to collect gold coins. Have been hankering to do that again. They're pretty neat. I'd like to us a Krugerrand as my ball marker when playing golf with the boys. See how long till they notice...haha...