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?
It is not impossible to happen. As we can see, bitcoin has a huge potential. It is like slowly taking step to reach people. But the thing here is, people need to realize what is bitcoin, how bitcoin works, and other questions concerning on understanding bitcoin. Bitcoin would be very essential in the future since we are facing a technology age.