That is all the world needs to use. Because most people now know each other through social networking sites and across many countries. Businesses nowadays expand international business and that is why blockchain technology is always needed for the future.
Yes it is very important in the current time when the trading world is becoming more globalized along with expansion. It is making it easy for people to carry out transactions at quick speedy rate as well as without having the need to convert one currency to another.
Moreover, big companies across the world might also deal in Bitcoin thereby eliminating the need for dollar which is a bit more costly to acquire and use. There are numerous ways Bitcoin helps in the currency world and in future it will have a whole economy revolving around itself.