If it were the case that the main currency of every country in the world is Bitcoin. Then how do you think the world economy would be run? Because when Bitcoin becomes the main currency, the American dollar and other countries will have Bitcoin as their main currency. The local currency of that country will be associated with it as the second currency. In this case, how would Bitcoin be used or how can it play a good role in the world economy?
It will be too volatile. We’d be buying tissue paper for a different price today than tomorrow. It could be cheaper or more expensive tomorrow. The government won’t be able to control bitcoin to fit the situation. If they need to adjust their currency, they can’t do it. The demand might be too high which would drive the currency upwards and would make it more volatile.