What are the dollars in your pocket? It’s paper that the government prints. This paper is called fiat currency, and this fiat currency is money that the government decides to be legal tender for us to pay for things, but it’s not backed up by any physical commodity these days.
The dollars in your pocket are worth less today than they were 5 years ago, and 5 years ago they were worth less than 10 years ago. Time erodes the purchasing power that the paper in your pocket has.
In the last few years, digital currency has become a thing known as cryptocurrency. It’s a new way to exchange value. It’s bank-less banking, much like how Email disrupted the post office and broke the value chain of the post office by not needing a stamp to send a letter, Cryptocurrency gives you the ability to send money without using a bank. That’s disruptive to the banks.
Is it a good thing ? a bad thing ? tell me what you think about it :D but keep in mind that Cryptocurrency is getting rid of the middle man but giving you more control of your money.