Now we can see some countries are regulating bitcoin and some government don't like it.Otherwise Bitcoin hasn't a stable price.
So my question is can bitcoin be a main currency of world economy?
For what reason not? It can possibly be the fundamental money of the world. Bitcoin is a technological innovation and as a human, we need changes to our economy and to the entire society. Bitcoin brings straightforwardness and decentralization. Be that as it may, because of the restricting of different nations, bitcoin has struggle to end up the fundamental cash on the planet.