The European Parliaments Committee on Economic and Monetary Affairs (ECON) has come up with a report on cryptocurrency entitled Virtual currencies and central banks monetary policy: challenges ahead. The finding of reports shows that cryptocurrency will not replace fiat currency, even in the long term.
https://bit.ly/2NeLgLrIt is fair enough I can accept and agree on that because cryptocurrencies the way they are right now can not replace the fiat, they need to be changed and regulated, become more stable.