...I believe that it could be a win-win situation for Bitcoin and other cryptocurrencies in the Blockchain space. Unless governments decide to start rolling their digital currencies to the world, everything will remain likely the same as it is today.
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I don 't understand why there is such a fuss about fiat money. I think that many people have credit cards , and accordingly, there is no need for such people to pay with fiat. Therefore, from the point of infection spread, there is no difference whether you will pay with a credit card or make a payment with cryptocurrency.