bank will do what they do, is there bitcoin or not bank never disappear and will be open every day.
you know that bank can give what never give by bitcoin? every stuff have different advantages. and they are not same
Maybe in future bitcoin will be a threat for the banks but now they are secured because whole community is relaying on banks people are fulfilling their needs just because of banks and they will never let them down until proper awareness will be given to them about bitcoin and once they completely know about bitcoin they will never see toward banks.