Yeah actually i think a steady flow of physical currency moving hands is a great thing. And with the large amount of cheap shops and vending machines they move cash around plenty.

But also i once bought groceries while waiting for a train in japan that involved selecting everything through an app paying ahead digitally and picking it up at a special location right outside the station.

Yeah like its literally the future we dream of complete with respect and re-use of goods that still work with a massive second hand market.