Cryptocurrency is the future of all payment method due to the decentralized nature which grants financial freedom and power to the people. However, for it to replace cash or the Fiat, it will take years of awareness creation. Up to date, some people do not have access to internet whereas others do not know how to access it.
the problem is, does the country not prevent that from happening? however we all need fiat money and especially about its legality. I believe crypto will become a mass transaction in the future but only on bitcoin and not for altcoins.