I think in this case the government would start accepting Bitcoin taxes. Although the idea of abolishing taxes I like more because its spend not on purpose.
Not every country does that. There are some countries around the world that have been using the tax being collected from the people on very good projects and this has improved the living standards of the people of that countries.
Well of Course there are allot of countries who regulated bitcoin and their people are living standard life only because of bitcoin which gives good opportunities of earning for them. According to me bitcoin is already a universal currency because it is applicable all over the world without any problem.