How often do you actually have cash? It's rare that I do! The next item on this list is money.
In my country paper money is used way more than you'd imagine. But I still buy Bitcoin, since I expect world to ... evolve. As simple as that.
There is a banknote in any country. There are still many blind people in the world, they also need to live.
my country's mobile payment is very convenient, I have no habits with banknotes. The thief will often steal people's banknotes. The mobile phone is in hand, the possibility of robbery is not very big.