Think about the history about the transacctions and monetary system.

1) Barter between things.
2) Appears the gold coins, silver coins at Romanian Imperium and other Imperiums to trade things/items between their citizens, pay wars, soldiers, taxes and other stuffs.
3) At S.VII appears in china the money paper (but oficial date of their instauration was at 812) Btw the last conserved papers are from S.XIV)
4) First European paper money appear at swiss on 1661

3-4 -> As you can see the humanity goes from using coins to use "paper" because with this new things, you don't have to go out to buy things with a backpack full of coins and over weight. Paper money is less weight than a coin. So his use was sucessfull around the world.

5) After that, appeared the virtual credit/debit cards. If you look how the first card was created was a wrong situation between 2 people who think. Why not create a unique card to use at different places to buy instead of carry coins or paper ?  Around 1950.

After that, we have experienced a lot of new things thanks to internet and techonology. New systems of payments (new methods of transactions between online platforms and other stuff) But really, this things weren't so important like (1-2-3-4-5 options I talked before)

So, thinking that the new era is based on the technology, and the needed that people want to buy with the best low comission. Why bitcoin or his "base" couldnt be the future?

Humanity always is being expanding and their needed  must be satisfied constantly....
Another example not 100% important but can open your eyes (The project Twyp from ING Bank).

So we are still on step 5)
Ofc, in a future a new step will be added and will be about internet. (Maybe won't be bitcoin, but yes his base or how was created)

My opinion, ofc sorry for my bad english. Need to go some months out to improve it