I think the danger is not, but risky. hence from that we must be careful in deepening bitcoin world.
indeed many countries that ban it but that does not mean should not use it. In some countries, they banned bitcoin because they see it in the future as powerful. the state just wants to organize it and become the mastermind behind it for the security and prosperity of the country. Besides, the government doesn't know if it will be good or not to the country. Because some countries are making their own cryptocurrrencies. and some other countries have imposed taxes on their investors.