Actually it depends on "you belong from which country". Due to you haven't mentioned your country, it's not possible to give you correct answer cause legality is different from one country to another. You had better visit "Wikipedia" to check legality & illegality of bitcoin
In my opinion, there will be very big problems with the legalization of cryptocurrency in totalitarian countries, where governments, with the support of the head of state, will prevent the introduction of cryptocurrency. In such states, the government always wants to control the cash flows of its citizens, while the cryptocurrency will be a real threat to the national currency, which the government always uses for its manipulations, increasing the volume of paper notes. At the same time, the government always justifies its actions by the fact that it is trying to fight the illegal turnover of prohibited funds, which may be bought or sold by someone using cryptocurrency. But it seems to me that the main thing is that Bitcoin is recognized in all countries as a digital asset, with appropriate legislation that regulates the turnover of cryptocurrency funds, and people themselves decide whether to use cryptocurrency or not.
