I think sooner or later each government will need to decide on bitcoin - whether to "approve it" or make illegal - and naturally authoritarian governments tend to forbid everything they do not understand "just in case" while more democratic try to accommodate. Nevertheless there will be more and more regulation of bitcoin and cryptocurrencies in general - which is not necessarily a bad thing...
The main reason about this fact is countries governments are still thinking and they want to see the future scope of bitcoin and as they will be satisfied then they will declare at every forum that bitcoin is legalized in their region for this purpose economists of every region must be given a short seminar about bitcoin so that he can tell his government that how much beneficial is bitcoin, once 60% of world start using it then will be awesome.