Well i guess its depends on the situation how the countries adopt the bitcoin as a national currency. It might be complicated i think, because not all people are using internet most specially the people around the provinces. How they could buy thier things if only bitcoin can accepted for payments.
Of course, I will support the use of bitcoin as a national currency if that would be happened. What matters most is the acceptability of bitcoin in our country, if it happens everyone can access bitcoin because our country will find ways for it.