Like with any new game changer, the fans of BTC will have to overcome challenges – legal, taxation and the political environment. In less than five years from now the banking system will most probably be duplicated for BTC. Banks will learn that bitcoin is not a foe, but a friend and will start to use it. And the second layer of infrastructure will be there. Then things will get organized. Five years more and killer apps will show us why bitcoin was, and is, important. Will this be a wallet that can store all your valuable assets? Or some money replacement? Who knows… but I put my two cents on the table that it will be big, very big!