Bitcoin has more advantage than fiat money online. It has a special characteristics that made user got attracted and interested.
I am using them both daily, it just that BTC is very unique, we can earn it in faucets and other services.
Definitely right, Bitcoin is making its own market name that persuade people to use it and preferred by people because aside from increasing value of bitcoin it has fast transaction.
So to compare it to fiat currency, bitcoin increasing its value but the fiat currency you use, is not increasing.