Do you think governments are afraid legalizing bitcoin because it's difficult regulating its use, circulation, determining individual's worth, earnings and may lead to tax evasion?
If the governments are afraid to Bitcoin maybe they are just protecting their citizens for the wrong usage of Bitcoin as a digital money, I think every government in the world must make a specific department like for example 'Department of Cryptocurrency' to study the benefits and negative impacts of Bitcoin and other cryptocurrency in future of their country because it is now a trend and more new people in different countries are in these Bitcoin scene.