Although I would like to think. Crypto-Currency as the final stage of Evolution, but truth be told the world is constantly changing and even when the coin and Note form of money came about I think everyone would have thought it would be the final stage. So we aren’t sure but what I can say is Crypto-Currency would be a relevant part of the future, it may even go through several changes itself along the way.
Revolution in finance system will bring new technology which is maybe opposed by any government. and so with cryptocurrency as revolution in payment system there alot countries opposed this existance and even issue political policy to bannd it. maybe if fully applied in world system ,alot us could save alot cost.