Many countries allowed their people to use bitcoin with some rules and regulations. This is to avoid illegal activities of using bitcoin. I would say, I it's one of the best platforms to convert the black money into white money. This leads to another criminal activities.
Then do you think every government should ban their people from using bitcoin? lol. it is not a solution but a government dictatorship
and failure to seek mutual benefits, in my opinion there is a middle ground to this, namely regulation..