I like the mobility of Bitcoin as well as the transaction system. now, I am able to make payment to anyone all over the world.
And it is kinda secure and every transaction is totally transparent. i think it is one of a good Advantage of BTC.
Fast transaction is the one of feature of bitcoin that makes it better than paper money. I think bitcoin and blockchain technology is beat combination to make our transaction faster and safer. Bitcoin can not be counterfeit so it is very good as currency, there are still many advantages of bitcoin.
I doubt that fast transaction is for bitcoin as we know we can pay fiat on the spot. The main feature of bitcoin which make it better to fiat is that it is more secured and cannot be conterfeit and hacked. It also has a limited supply where fiat can be printed and cannot control the total supply.