There are many reasons why some countries in the world still do not agree to use bitcoin as a legal digital currency, such as in my country:
1. The government cannot impose taxes and will not be able to manage the currency, making it difficult to develop their country's infrastructure.
2. It can be as easy as money laundering, illegal trade, ex: UG, drug trafficking, weapons and very hard to detect the address of the crime.
3. The exchange is difficult when the exchange rate fluctuates, there may be loss of money between the two parties, causing many cases of scam ...
These are just a few of my ideas, but above all it is a tax problem and cannot handle Bitcoin
. Currently, my country does not support bitcoin, but still does not forbid people to use bitcoin in the exchange. Not have rule