I know many think that they can escape banks, but they are insanely helpful and trustworthy for many everyday people who we'd want to join into the BTC community.
Its possible to have bitcoin bank but for me this will be happen if the government makes bitcoin as a real currency. But as of now its impossible because I think a lot of people will disagree about this if that bank is centralized. For me I don't want bitcoin to be centralized because the government will going to have power to control it. It is still okay to just have a online wallet or offline wallet.