Or maybe it's a good thing? In The Curse of Cash, economist Kenneth Rogoff (of austerity fame, or infamy) argues against cash, particularly large denomination bank notes and crypto, as accessories to crime, corruption, and tax evasion, and I'm with him there. But also, btw, because you can't impose negative interest rates on cash (but on deposits!) - not sure what to think about that.
https://press.princeton.edu/books/hardcover/9780691172132/th...