Bitcoin adoption is still at an experimental level, so it is difficult to say whether it will benefit the national or world economy. Furthermore, when bitcoin is only used as a speculative asset (what's going on) it can't really generate any national interest. We need more time for bitcoin adoption to become more popular, more people to adopt it in real life, then we will see how impactful it is. It is too early to say that bitcoin is benefiting and improving the world economy, but it is also impossible to conclude that it will never bring any benefit.