I don't think banks will vanish. They will open up Bitcoin counter as and when it's legal to do so. Banks will and always stay. Bitcoin will soon be a part of banks maybe 2-5 years down the line.
Yes bank is toward bitcoin. So I think they will cooperated with bitcoin. If bank stay on their system they will unysed by people. They have to keep moving forward. Any conventional must be replaced by the modern one.
That's just nonsense. Banks right now have no interest in the coin aspect of this piece of technology, and will never have. The only thing they are interested in is the blockchain technology that they will set up in their own private form. It's not that they will make use of Bitcoin's blockchain. Also that is something that will never happen.
Banks thrive on the control that they have over every aspect of their business, way of storing people's money, way of handling transactions for its customers, etc. In every part the customers don't have any control, and that's exactly the thing banks want to stay the same.
Bitcoin gives people financial freedom, do you really think a centralized entity will hand you over that kind of freedom by incorporating something that is basically poison to their entire business structure? Think good about it. You'll then realize what I am trying to say.