The primary reason as per me is their is no focal administration to control the bitcoin and government imagines that it will influence the economy of the country.Uncontrolled dissemination of money is the significant issue which is looked by the vast majority of the nations because of which they are not announcing it legal.Misuse of bitcoin prompted numerous issues which can't be traceable.No question it is extremely advantageous and simple to use for basic native of nations yet some are utilizing it for unlawful means because of which pronouncing it lawful isn't considered as protected.