Probability to replace fiat currency by cryptocurrency.

Many of us think that crypto will replace fiat currency in near future. If it becomes possible what will happen?

In my opinion, it's not possible. Cryptocurrency uses blockchain technology which brings revolution in the digital currency system. It is one of the most secured system and this system can not possible to hack. But cryptocurrency (bitcoin, alt coin) using gold standard trying to evolve in the society. We already have seen that it's value is not stable and this can not provide stability of world economy. This has no ability to control scarcity. So we can say till now fiat currency is the best solution for our economy. But a single change in crypto can remove those disadvantages. We are waiting to see what happen in next days.