Yeah, people should be allowed to buy and sell crypto freely, it is a matter of personal freedom.
Personal freedom does not mean that one should violate the government rules and regulations. If the government has forbidden digital currencies in your country then we should abide the rules. However we can convince the governments by raising our voice and telling the authorities the benefit of crypto currency.
I think that government knows better what should be done and what not. The reason behind banning crypto is mainly due to the low developed status and the financial threat crypto can possibly pose to the already struggling economy.