I don`t think that any country will adopt bitcoin because it will loose the independence of the central bank of that country.Every goverment needs a central bank to print money and create inflation,which sometimes might help the economy.
In my country the national currency is fixed to the euro and sooner or later we will adopt the euro.
The idea of bitcoinization is too exotic.
It would mean that we would be our own banks. Since when does any politician agree that? Nah, Bitcoin should remain as it is at this moment, it shouldn't become a currency replacement. It's a commodity, an anonymous one, and that's nice. Just the fact that it is worth more than 1g of Gold and almost as much as 1oz of Gold is great, so Bitcoin has a big value too..