It will be very hard for cryptocurrency to replace fiat currency because of it volatility nature. You cannot save it for future use without you being scare of reduction in value which doesn't affects fiat currency.
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Good answer, I beleive fiat money I here to stay for another decade because its irreplaceable , I don't believe crypto currency can even compete with fiat money for the time being.No I do not think so.I think that fiat money is inreplaceable.So I do no think that cryptocurrencies will replace fiat money and that is mainly because the high risk and the recent downfall of cryptocurrencies
I quit agree with you,that it would be very difficult to replace the fiat currency,the regulation aspect is a major obstacle as most government would not want to loose controle of the dominance of their own currency.It is not possible for Bitcoin to replace Fiat. But it's great for alternative payment system, hence they will work hand in hand. Crypto currency will continue its own unique purpose, and same with Fiat. No one can displace the other.
That is true about cryptocurrency and trading,but one thing about this virtual currency is that it cannot take the place of fiat currency, because not every person especially locals can transact with crypto.Not everyone in the world has access to the internet, especially in developing countries.
This is one factor that will limit the use of cryptocurrency throughout the world, hence fiat will always be the main means of exchange for them.