[Hermel]

Like in chess, the moves that you could play matter as much as the moves that you do play. So even if I don't need cash, I still appreciate the possibility of using cash in case my bank of government locks me out of my accounts.

For example, the Canadian government froze the accounts of political activists during the Corona crisis. This shocked me. It shows that even countries that are perceived as free and democratic sometimes cannot resist to abuse their power. And the more power we give them, the more likely it is that a politician will abuse his or her power sooner or later.