in my opinion government slowly will welcome for bitcoin as one of their economy base.
What makes you feel that? The last thing bitcoin needs is government regulation because it will affect system functioning of bitcoin. Welcoming it would be nice, fucking with it? Probably not.
because they want to control it via taxing, and regulate it, but especially because of taxes, isn't obvious? they want to milk everything that live in this planet, bitcoin will not be an exception for them