Bitcoin is growing bigger as of now 1 bitcoin is 6,700 aud can you believe it 4 days ago it's only 5,900 aud it's growing everyday. In my opinion, 5 - 10yrs from now 1 bitcoin will be 1 million the society have accepted bitcoin it will be the first decentralized digital currency or internet money. The world is changing before kodak an imaging company they are the multi-million company one day they went bankruptcy because Instagram came and change the game and slowly kodak is out of business. The history will repeat itself one day bitcoin will change the game more people will accept digital currency than bank notes and central bank will no longer create notes and coins and soon the bank will create their own digital currency and bank notes and coins will disappear forever. For that, bitcoin will replace central bank because people like decentralized digital currency.