I think in the future, banks will dissappear, Wallet online Blockchain or Coinbase will replace Banks, we can look forward to a world in the use of virtual currency and transaction technology of Blockchain, Banks not suitable for future
This is too optimistic if banks see a great majority of people begin to use bitcoin then they will begin to offer their services and since they have a lot of power, economical and political then they could get a great market share very rapidly.
Banks still remain because it is not online and i think much safe if you use banks thank bitcoin unlike right now they are using coinbase many people are complaining about fraudulent buying in bitcoin treding on reddit and i think they can just good as partner for exchanging money or for transferring bitcoin if they are always using a 3rd party..