If cryptocurrency manages to replace fiat money then it means that the government and banks manages to get into digital currency, which means that they managed to control cryptocurrency. That is one thing I hope to never happen so as great as bitcoins are, I do not think it will ever completely eliminate fiat money.

I don't think that it will ever happen.Crypto's are something to discuss nowadays.It is gaining popularity and people are really attracted towards the facilites it provides to it's users.Many countries have declared crypto's as legal in their respective countries and many are thinking to do it but I don't think that it will ever replace fiat.Fiat currency is being used by people since a long time.It is difficult for any other currency such as crypto's to gain the amount of trust that fiat has.Fiat money is easy to use and can be used anywhere without any need of internet conncetion.So I don't think that it will ever happen.No doubt crypto's and fiat will work hand in hand in future.

If all of the fiat money was replaced by digital I think the corruption and criminality would arise. It would be more difficult to track down transactions. No one will know who owes and what money, which might lead to a chaos. How do you expect accountants to do their job, if all they knew about a certain bank account would be a bunch of characters? And, also, if every fiat currency was replaced by digital, but still it would be the government, who regulates the system - then what about all of the alts and BTC, that we use now? Would the governments let people use it then? I don't think so. And what about the taxes? Anyway, I don't think that there's any point in changing all of the fiat money to cryptocurrencies. In such a case - either the whole economics will crash, or cryptocurrencies won't be anonymous and won't have most of the advantages that they carry now anymore.

I dont think if will possible to happen crypto and fiat have a big differences and as we see crypto is volatile and fiat are not and this might the big factor why crypto will never replace fiat. I think in the future fiat is still exist and crypto will have a big role in our economies.

Not anytime soon. In fact, I don't even see the possibility of this yet. No country will abandon its fiat system or national currency which is part of its symbols and legal tender for a form of currency that is not within their control. In that case, how do they plan their annual budget? Cryptocurrency cannot be used in planning budget. I am sure everyone agrees with me on this.

If ever cryotocurrencies completely take over and replace fiat, there is no way that the government will allow such as the things you are saying. There will be a way to track down digital money because there is no way that the government will not regulate it.

Btw, even with cryptocurrency we are still paying tax. Even at this moment.
And there is a very huge possibility that by the next few years, people will then prefer transactions made online or usung digital money for convinience. The world is fastly evolving and so is the technology.

I can't imagine the whole economic crashing. Surely experts can do something to prevent this. As for the current adavantage and characteristics of todays crypto, I agree that soon it will change accordingly to what is best suited once crypto take over the world. I'm sure there will still be versions of crypto in the future which can be used with anonimity.

Fiat is already the means of buying products or paying for any services since the barter system centuries ago. I believe it will be a very tough situation for people across the globe to only use crypto because we also have to consider those area who don't have access to internet.

Probably not, I think fiat will continue to exist because the fiat is more stable. Crypto currency will not replace the fiat, I think the crypto currency is more useful as an asset.

In the very long term it is possible. Not probable but possible.Although Cryptocurrency  are gaining a speeding momentum since their introduction to the world, there are claims of it having both advantageous and disadvantageous purposes.