Physical currency is privacy, it is freedom of commerce, it is property rights. Giving up physical currency means giving up all your freedoms at once. Simply be

Physical currency is privacy, it is freedom of commerce, it is property rights. Giving up physical currency means giving up all your freedoms at once. Simply because government can tell you what your money is worth at any instant, where you can spend it, and if you can spend it or are required to do so to not lose it