If botcoin really replace paper money, bank will be useless, we don't to use bank anymore if its happen. Government wil always protect their national currency so probably it wil not happen.
It seems to be difficult to replace the banks, if the use of bitcoin is massive and beat fiat then banks will accept bitcoin as a type of savings or commodities such as mutual funds.
Nothing will happen to bank. Some people are thinking that bitcoin will disappear bitcoin but according to me it is not possible to disappear bank because with out bank system countries are unable to do business with other countries yes I was agree with that bitcoin will reduce users of banks.
Lol, thats funny, BITCOIN doesnt stand a chance against banks. Banks are being run by the government. So putting Bitcoin up against banks is like putting it up against the government, and they will just destroy Bitcoin at once and everyone into Bitcoin will just make loss. And also, Bitcoin cant reduce the number of people that are using banks.
I believe about 99% or 98% of the people in the world doesnt make use of Bitcoin. If Bitcoin has 10 million users, I believe 9.8 million out of the 10 million are using banks and are just here to make profits. Only a fool will withdraw all he has and invest them all into Bitcoin.