LOl it is not that banks hate bitcoins why would they hate them they dont even need to work with bitcoins the only reason thy men think they would hate bitcoins is that bticoin has a gold value and banks owns that gold.
Banks are hating Bitcoin because the value is going to rise more and more and it is also becoming more popular so that is nice for the currency itself.
And the transaction cost are also much lower than the banks and it happens also much faster so that is the nice thing of Bitcoin.