governments simply aren't interested in incorporating bitcoin. they can't deal with the fact that it is something they can't control. paper money will stay at least for another 10-20 years.
This is true , in my own country our government were not into implementing Bitcoin to the people cause the blame may occur to their side if the profit may be lesser than what it should be, they say that Bitcoin dumps rapidly and the initial state of your money will be different in just a matter of seconds , change is inevitable, as well as the profit that you put in risk, so probably cash will still be functional because of this kind of situation.