1. The executive branch of a major Western democracy unilaterally invoked emergency powers to freeze the bank accounts of political dissidents.
2. Two American credit card companies unilaterally and without warning revoked all service to an entire country.
In a cashless system, your money does not belong to you. It belongs to authorities and institutions that do not care about you. Whether or not you can buy groceries can change in an instant, regardless of whether or not you personally deserve it. You might be trying to get your family out of a country that’s made itself an international pariah—you may even condemn your government’s actions—but that doesn’t mean your card is going to work when you try and buy a meal for your family at the train station.