As every aspect of life, especially goods and services are becoming digitized and have their values exchanged on virtual platforms, it's only natural that payment methods will also follow the trend.
maybe crypto currency is created because it keeps up with the times and technology because in the future everything is needed quickly and efficiently, of course and maybe the real currency will adopt a system that has been used by crypto currencies
Crypto currency is surely our future currency because it is made according to time and need, as we want our life to be it is possible only with help of crypto currency, it is time saving and money saving way of enjoying shopping, we can buy anything we want even if we are at work or we are at home so all this was not possible with paper money, I think in future more countries will adopt crypto currency as real currency.