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.
I think it needs more time before cryptocurrency can be ready to accept worldwide, there still some country's who do not believe on it and there still more regulations need to study before it will proceeds.