Are you joking, or do you really think that cash has superior security properties to asymmetric key management? It's a lot easier to steal my cash, or my bank

Are you joking, or do you really think that cash has superior security properties to asymmetric key management? It's a lot easier to steal my cash, or my bank balance, or my securities, or any other physical or fiat asset I own, than it is to steal even moderately-secured Bitcoins.