This is one reason why the government fears and interferes in the worldwide adoption of bitcoin. They wanted to interlope with its every transaction; it's just that they can't figure out yet how! We all know for a fact that one good thing about bitcoin is its decentralization, which gives power to the mass. If bitcoin goes mainstream without the interference of the government, living up to its very principle of full anonymity and core innovation, then how could the government earn from us? They will obviously lose power over the economy. Of course, they simply won't let us evade taxes using bitcoin. So apparently, this is the main reason why they keep on opposing bitcoin despite its benefits.