I think it is possible that in the future crypto will replace Fiat in many areas such as health care, education ... But to do that I think it is necessary to address the problem of poor status in the world. when they are not able to receive technology.
I have too many doubts concerning these things. Yes, I agree - the cryptocurrency will be used in all spheres of our life. However, traditional money will never vanish. Cash and credit cards are very convenient.