There's A Fatal Flaw In Cryptocurrencies Which Means They Can Never Be Real Currencies

"The problem that cryptocurrencies face is that they fail the two key metrics of what makes a currency a currency,” Donovan said. “A currency has to be a widely used medium of exchange. Cryptocurrencies are never going to achieve that. Period.” “The fatal issue for cryptocurrencies is that the supply of them can only ever go up,” he said. “There is unlimited upside to the supply of cryptocurrencies.”"