Digital currency is the future. Take for example Estonia--they are attempting to create their own coin and standardize it in their country.
The way these crypto currencies are making such a big name and that too in this much of the time, I dont think so that there will be any such thing which will stop these crypto currencies to lead the world in the future. These crypto coins will surely help this world in becoming a better place to live and that it will help the people who trust these coins in having a better living.