For better or worse, a cashless world is coming. Such a thing would have been unheard of in the 1800s, and boy how times have changed.
is it though? i've heard the fearmongering about sweden, but i don't see anything like that happening in the USA. cash economies are still really prevalent here. where i live, gas prices are lower if you're paying with cash vs card and most people i know still use cash (at least sometimes).