What do you think are the main problems of cryptocurrencies that stop them from becoming real money and real medium of exchange (volatility, etc.)?
Some would say volatility but I think the root of it is because of it being decentralized.
Decentralization is the main reason and I don't really expect to be real money. With nobody or government to control the price, it is just manipulated by the investors and the movement in the market making it volatile. With the decentralization and its anonymity, people look at it as a scam and I think that is another factor.