I guest it’s reasonable to expect cash to follow the path of other goods that have been replaced by digital alternatives, such as photos, music and movies. But if Cryptocurrencies or other digital forms of payment  transactions will ever replace paper money .. may be  Not so fast. Cash will likely become less popular, thanks to the high cost of using cash and the growing array of alternatives. But I expect it will remain with us forever. The future will be “less cash,” rather than cashless.