If all countries can accepted crypto currencies in there various countries, as a means of payment and as a means of online exchanges, such as money is, money is anything use as a means of exchange and general acceptable. With the means I think all cryptocurrencies (bitcoin) will definitely go round the world, and will be use as a means of exchange. I will be so grateful to the creation of crypto currencies. This will also help our future generation, Remember something when we do international transfer across the countries, it may take a while to get the money to your local bank account, but with cryptocurrency you can get instant reflection if bitcoin etc is transfer to wallet,And you can make use of your coin (bitcoin ETC).
This certainly makes sense, but in my opinion this will not happen ... Cryptocurrency was created for speculation, the whole hype around cryptocurrency payment systems ends only with hype. If a decision is made about a crypto payment system, then there will be less speculation.
Its already happening in some countries so that opinion is already invalid in some places. The hype that Cryptocurrencies bring is still happening around the world and the adoption process in which we are able to use Cryptocurrencies as a means of payment is rapidly increasing. Using Crypto in transactions has always been its purpose and it was not made for speculations. Its adoption will be a lot quicker since big markets are already trying to integrate it within their system.