Yes op, you make a good point by saying bitcoin will not eliminate bank. Bank have play a lot of activities that is making bitcoin to continue spreading globally because many people have converted their bitcoin to fiat through bank to purchase whatever they want from their country, without using bitcoin that is not allow in their country. You can save fiat in the bank and other documents while you can only save your bitcoin in your wallet but you can't save other documents in your wallet, which is the reason I say bitcoin will continue existing and bank will also existing for people to make use of them to achieve their purpose. Since, we know that the founder of bitcoin didn't created bitcoin to be into competition to eliminate bank, I don't think such thing will happen to bank because it's government source of income.
Well said, you have hit the point. Banking is one of the roles never to be replaced by Bitcoin due to its purpose in holding a currency (fiat currency), the documents and services which individuals require on a daily basis. Bitcoin is wonderful as a decentralized store of value and payment system but banks have useful conveniences and support many people are dependent on. Besides, governments enjoy banks in taxes and regulation, thus it is logical that banks would not go away. Banks and Bitcoin can coexist and they are catering to different needs and there is no one taking over the other.