There are numerous currencies spread across the numerous countries of the world which are used for payments, trading, and exchange of any form. But there is a limitation which is common to all of those currencies. One of these currencies can not be used in the whole country of the world which means that, each currency is limited to a particular geographical location and is useless outside that location. Each country has a particular currency which is a property of the government of that country.
It is such a major limitation to the use of money since one can not freely carry the Cash which is his/hers along to be spent in another country. If not for the exchange services, a man who is very rich in his home country would become extremely poor when he travels to another country. Some of the problems with this exchange service is the lack of competence and the absurd charges. It might be easy to change your local currency when you are about to travel but it becomes hard to change back on returning back home leaving one with unusable fractions of foreign currencies.
Another major issue with the use of this government owned fiat currencies is that, one could not make an order from another country and send the payment to the dealer without going through the banks and other centralized financial institutions. With the use of local fiat currencies, every transaction including purchases and payment made by the user is being tracked and watched which is a clear case of privacy breach. Worst case scenario, the fund owned by the user could be locked and siezed by the authority when they feel like.
To me, the reason for not having a globally accepted currency is only but selfishness. Every government prefer to have it's own currency in other to maintain Authority and be able to keep its subjects under manipulation through the banks. Another reason is to keep the competition at the global market level alive not minding what the people really want.
This selfishness is the reason why some countries after realizing the threats Crypto currency posses to their secret agenda of keeping their citizens under financial slavery, they move to ban it completely. Imagine banning crypto currencies which proffer solutions to the worldwide limitations of money usage. The only way available, through which one could send money to loved ones far and near without going through the stress of bank delays, One could utilize his/her funds without being watched by anyone and one could have full control over his/her assets. This simply shows that such a country really do not care about the people. But one thing which they don't know is the fact that, crypto currencies can't be banned. It could be restricted to the level of preventing the banks and other centralized financial institutions from having anything to do with it but that does not stop the people from using it because, it is not being controlled by anyone and the government has no power over their wallets.
Crypto is that currency that could be globally accepted as means of payment. The one which you do not need to convert before using it anywhere in the world. The one which there could be no unusable fraction of. The one which needs no permission to be sent to anyone anywhere in the world.
Like we know, there are currently many crypto currencies in existence which gives one the privilege to choose which one suits him/her the more and satisfies their purpose. There are currently some cryptos which can not be used as cash and for easy payment due to major setbacks like high transaction charges, delay in transaction and indirect centralization. Therefore, such cryptos are no much different from the government owned fiats as the features are almost the same. This also disqualifies any of those cryptos from being used as a single globally accepted currency.
But then, Bitcoincash which is most appropriately referred to as BitcoinBCH is a crypto currency with features which are almost completely contrary to those of local fiats except for the fact that, they are all money. Bitcoin Cash is an electronic currency which is acceptable in any country of the world with or without the government's approval. The users only needs BCH wallets and then, they can make payments without stress, travel to any country of the world without Cash, send money to anyone anywhere, at anytime. They do not have to be afraid of their funds being seized, or be afraid of outrageous charges during international transactions. They do not have to be afraid of having unusable notes stacked in their cupboards.
Bitcoincash is efficient enough to serve as the world wide accepted currency. And I believe it's going to be in the nearest future with the current rate of adoption. It only needs more awareness creation which is a responsibility of everyone that uses it and enjoys its advantages.
I'm a proud user of BCH and wouldn't mind if it becomes the only currency in the World!
Best