Cards have existed long before stripe. Convenience isn't about "hard" vs "not hard". It's "more convenient" vs "less convenient". And as I just laid out, the on

Cards have existed long before stripe. Convenience isn't about "hard" vs "not hard". It's "more convenient" vs "less convenient". And as I just laid out, the only scenario I can think that cash is more convenient is when power/internet is not available. I carry some cash, but the only times I ever use it is for tipping and vending machines.