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?
I think no,, because many country cant accept bitcoin as their currency, Hopefully in the future they see what potential bitcoin do, if this happen i think can help economy in one country. We dont know if this happen but i believe in bitcoin.
Bitcoin could be made legal in those countries, we don't need to wait till some countries will make bitcoin as their currency it will be enough if they will change the law and say that crypto could be used in their country.