Bitcoin will just be a other option to pay. I don't think that it will go over euros and dollars. I also think that bitcoin will sooner die than dollars. Its just online.
Cash is in your pocket and is safer than your coins actually.
I agree with you. Bitcoin is just an option to pay things or to act as an investment and nothing more. Bitcoin is not a currency that is perfect created for the whole world or whole population of the people in the world so i don't think that bitcoin will become the future of the money and become like the dollar because bitcoin is just an option and it is more likely has the system of paypal and nothing more.