Cryptocurrency works with the internet so that if there is any internet interruption then there is no transaction, this is of course the state's consideration to use cryptocurrency so I think the current currency is better than cryptocurrency.
This is true the bitcoin is all about the internet and this is the best thing about the bitcoin for sure, I use the bitcoin and the bitcoin will be more famous if it will be the worlds best currency you should invest in it. Regular currency is being used for the people but now they are easy to use and the buy the bitcoin as the secure currency. It is the time to buy more and invest high.
I think in many things yes like purchasing outside the country and also increase in the investment due to the price growth. On the other hand I think regular currency is better than bitcoin because there is no fear of hacking and blocking by anonymous persons. You can use your regular currency without any fear in the local markets and can convert to any other currency of you need.