I’m curious why not other coins, like bitcoin cash or lite coin but bitcoin.
I agree fiat will be replaced with cryptocurrency some day but not sure when is it and whether it’s single or not.
I have some cryptocurrencies so honestly I’m really excited to see the future.
"The world ultimately will have a single currency, the internet will have a single currency. I personally believe that it will be bitcoin."
https://www.coindesk.com/twitter-ceo-jack-dorsey-bitcoin-will-be-the-worlds-single-currency/