No, I don't think so. We have different governments (and laws) running each of our countries and there is no way they're gonna let a single currency to be used as mode of payment, much less a decentralized one which they cannot control. They can regulate it but I don't see it becoming a universal currency to replace all of fiat currencies around the world. The government will rather make their own cryptocurrency if that will be the case.

I think one currency across the world is really impossible. the standards of all currency are not the same.

It is really possible to happen in the future because everything in this world is changing to adapt and so the currency also. Bitcoin has the power to become the only currency to be used in the future because bitcoin is so popular and influential globally. Bitcoin has the characteristic to become the father of the new currency. Bitcoin is the only digital coin to reach a 10k USD value. Bitcoin has no limit if you just believe in the power and its potential.

so much stupidity in this forum

no there will never be a single currency worldwide, controlled by a single instance, and even if it cant be imposed on the world without violence, people will always try to resist.

the us dollar that is currency globally accepted only has such wide spread because american military soldiers, are still listening on US dollar funded propaganda, and the elites around the gulf that sell the major oil for shipment globally, accept the us dollar for oil.

This is so impossible to happen because we already used to use different kinds of currency in each or every nation and that is why there will be no possibility for the world to have one currency because it is hard to balance the world's economy if we will just depending in one currency, we are good at different currencies and we don't need to have only one.

Practically introduce a single crypto currency in the whole world as a single form of payment, it is impossible. It's like calling for peace throughout the world. And military conflicts continue to flare up in one place or in another place. A single crypto currency in the whole world actually means the unification of the economies of all countries into one single global global economy. It is impossible to do this in the near future. In each country there are economic interests and contradictions that do not allow it to be done.

I hope that something like this will happen but when i am thinking how we can make it... i'm realizing that many governments will not allow bitcoin replace their currencies.

I do not believe that bitcoin has the capacity to absorb most of the economic transactions that take place in the world in its ecosystem, so I think it is time to start leaving behind the ideal of a bitcoin displacing the dominant financial system of today and be satisfied that bitcoin has the ability to survive the arrival of more advanced cryptocurrencies.