The prices of Bitcoin will rise. But it is not an important issue. The best thing is that more people and company accept Bitcoin in the public and start to use it as a proper currency.
And not only people, what about Country's like India and China!? They should accept Bitcoin too as Legal.
They will rather use it as an additional currency after a while. Countries must understand what they will benefit from the fact that they will take Bitcoin.
I think the adoption will be highest where government regulation is easier to bypass and where the national currency is weak to begin with. So adoption would be easier in developing countries, especially where the local currency is weak (most developing countries in Asia and South America). Regulation and taxation is more stringent in developed countries, so it's harder for businesses to accept bitcoin until the government recognizes it and is able to tax it. Not sure how far down the process that is.