One of the problem with any type of coin is control. In ancient times, some rulers decided to thin the metal coins, silver, or even gold to fake the value and create more money. In modern times, we had paper money, and governments and banks tells us to trust them, while they keep printing. With crypto, what kind of control we had? Time and time again we hear about Bitcoins stolen, in big numbers, Ethereum stolen also, and a big number of new coins, who spread the offer, without giving no incentive to trust, besides their words.

Without any means of control, the hope that some day people will not panic, is just an illusion.