Yes i do beilive that someday we will use the crypto currencies as a money in the near future and also innovation felt so good when they do it because it made our lives much more easier and not bring any big money physically
Yes, that day is not in too far as awareness on cryptocurrencies is enormously increasing everyday which will definitely lead to a situation where people will forget using fiats completely.
The future of money is at peril already as cashless transactions are being preferred my all levels of people in all the countries. If this trend keeps improving in coming days then along with rich advantages of cryptocurrency, people will definitely forget using fiats for their daily life. There will be less chances for fiats to coexist along with crypto currencies as this world will move to better system always.