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.
But maybe in the future it may change the situation because our community is getting bigger and also our technologies, we can say that also in the future paper money will be no longer useful to us just imagine that if put in the museum and in the future they will remember what we use in the past compare to there present.