I live in Sweden and don't think I've touched physical money for about a decade. Cash is more or less on life support by now, with a small and dwindling list of places you can even use it anymore - basically grocery stores and e.g. hairdressers that cheat on their taxes. And illegal drugs, I suppose, though from recent news where people get busted by paying dealers using Swish (a Swedish Venmo-ish service) I'm not sure it's used even for that.