In the old age,few centuries ago people uses some money system which is called Barter system to buy and sell their products.This system works like exchanging their products between two people when they are in need but they realized that that system has flaws and not suitable for everyone since if there is no demand for one's product he can't buy anything he needs so later they moved to currencies (paper money) until now people uses this as their main form of payment but in digital format but people needs to understand that this also has flaw of centralization so we need to move to the decentralized money for better life.Lets get update ourselves to use the crypto currencies.
That is usually the thing. The world keeps evolving, new innovations and technology keeps coming up every single time and all that matters at the end is the adoption of the new technology in the long run.
Over time, people will tend to realize the importance and the great benefit the blockchain technology brings and for the fact that paper money will be out of the system maybe in the long run, would certainly bring about newer ways of doing things like we are having it with some of us now.