There are just too many reasons to why banks dislike bitcoin, firstly take not that bank is a regulated entity and won't love to work with an anonymous asset, secondly there are being fed with taught of bitcoin filled with many illicit activities like money laundering, illegal transfer of funds etc, just too many to mention but the early there get to see the importance of bitcoin the good for them, the fact here is bitcoin can be used for both good and bad, it all depends on the individual.