Advantage:
~ We will be able to transact everything digitally.
~ We are able to help our countries economy as Pay taxes.
~ Investments in other cryptos for gaining profit will not be difficult as everybody accepts crypto.
~ improvement of capabilities of a country through technology.


Disadvantage:
- low price of cryptocurrency of a country will affect the economy of a country.
- exchanger might take advantage of asking high price in exchange.
- at the start of its use, there will be a great struggle to those who are poor and unaware of crypto.

These are only some of the advantage and the disadvantage from my vantage point of view though due to technologies improvement and awareness of people the advantages will be more and lesser disadvantage in the future.