You see because of the nature of bitcoin and how decentralized it is it became something they cannot control that is why they refuse to make it as an official global currency.
I also think that it has grown a lot and that it has a great future but we can simply not become a global currency that is just not possible without any doubts.
It is already grown a lot and it keeps on growing each day that is passing by. It can be a global currency even there is no law with it as long as all of us are agreeing that we need to keep on using bitcoin then for sure we are going to have a lot transactions with bitcoin. Then that is going to make it as a global currency.
Bitcoin is global currency and I think its the only way in which bitcoin can survive, to be international. If we tie bitcoin for any country that can be the end of this freedom we have now. Do you think that bitcoin can work just in one country? What will happen with bitcoins in that case? As I see here there is people from every country in the world, that is international.
Yes for many of us bitcoin means extra income, but through that we learn about alternatives, world economy, some people find bitcoin very helpful in sending and saving money.
You are not satisfied because the fact that many stores and merchants are not still accepting bitcoin and government is not even agreeing that bitcoin is going to be used globally. Don't worry about that as long as the market is keep on going, we don't have to think about it too much, let's just keep on supporting bitcoin and the adoption soon will be massive.