When you consider this, it's important to take note of the key advantages of Bitcoin and also the disadvantages we've seen so far, and how the government respond to it.
From the general overview and how other countries have reacted, it's possible that half will accept it, but the other half would reject it. For example, China and Nigeria, two countries with considerable power in their continents have limited it's use. Others are India, Nepal, Algeria and Indonesia.
Countries like El Salvador, have made it a legal tender and others like Switzerland, Cyprus, and Singapore neither prohibit nor promote it's use.
One of the main issues government have with cryptocurrency is it's decentralization. The government is a centralized power, and it exerts a lot of this power through money. Taking that power and leaving it in the hands of citizens makes the government less powerful.
Another issue is the anonymity it grants users, which means that the government won't know who spent what and where. It's a good way to facilitate illegal transactions without fear.