• Bitcoin is not used as an actual currency
• There is no underlying value of the digital asset
• Something doesn't increase in value just because you "hodl" (or stick to it)

Interestingly, neither is many actual fiat currencies.
But, bitcoin's adoption is becoming greater and greater.
To set up a CC payment system for a new company takes about a month, and a ton of money for the equipment.
Bitcoin, can be set up (by someone that knows what they are doing) in about 10 minutes (max) with any tablet you had handy.
I am fairly sure that there will soon be a team of people going door to door selling an all-in-one bitcoin payment acceptance system.

There is no underlying value to any of the current fiat currencies. There was this one guy who was going to make gold the underlying value... they invaded his country and killed him.

There are people hodl'ing gold, and... well, it is just a pretty yellow rock. And will probably be worthless. As in people won't touch the stuff because its the devils money (Zeros, Buffet, Rots-children)

So, looking at crypto's in a factual comparison, cryptos actually look a lot better than there alternative.