The technology by which most of the crypto currencies are created, such as Bitcoin, Ethereum, Cardano and others, of course, have a great future. These crypto currencies have already made a huge step in the development of the financial sector and electronic commerce.
I believe that cryptocurrencies will replace the financial sector and will be the new type of future economic model! Look, you can make worldwide transfers with only 0,001$ in Ether. This is really great!