Although there are a few countries who uses bitcoins and other cryptocurrencies now, I cannot help but wonder if the world is truly ready for this digital currency? It will certainly be hard to replace all currencies in the world but it could happen in a decade or so, perhaps even less? Still the question is, is the world ready? I think if this happens it might be one of the biggest changes that will happen worldwide.
As of now, we can clearly say that most of the countries are still hesitant on allowing or legalizing cryptocurrencies since its mode of transaction is too difficult to control. So the world itself is not really ready.