Lot of countries do not allow to use crypto currencies and they discourage using them. However as far as I feel, trading with crypto is not that harmful for the economy of the country. As an example, if a person has Eth and someone from another country needs to buy Eth, that buyer needs to pay the seller in terms of dollars. Then that seller needs to convert that Dollars to his native currency which means it creates a the demand for the native currency and increase the value of the currency. May be the government is unable to add a tax on such transactions but it is beneficial for the currency used in seller's country.
What do you think about that?
Not only is it a new technology yet, but it also has a moth that can destroy the banking system, the cryptocurrency market. In addition, the fact that there is a new market and that there is no regulation is also shown among the reasons for these prohibitions. Of course, the amateur investor has to take measures like this because every jumper he jumped into the well. We can be confident that everyone will be able to act in a well-informed manner, which will not require any bans.