Bitcoin is going very famous in future because bitcoin gave a lot of profits to people and it will have a great affect on bank because in future more people will start investing in bitcoin and saving money in bitcoins.
Yes, Bitcoin is becoming really famous and liked by a lot of people all around the world. But do you really think that big companies like banks will just stand by while Bitcoin is destroying them? Banks always go where the profit is, and with that known it is just a matter of time before they start dealing with Bitcoin too. They will offer credits in Bitcoin like in any other currency. Banks will not go down so easily, they will last long long time.