yes in modern time we do not need any traditional  banking system. i think the online wallet system is the best system. in which we do not need to visit  bank and complete the procedure. using online wallet system we can use our wallet any time and any where without any delay and without any other issue. i will like to continue the wallet system for ever. as it is too much convenient for me.

I think people want a full control by their money. so I think bitcoin bank will not be so in need. because I believe bitcoin users will be pleased with the wallet than bank

Well bitcoin banks already exist and we call them " Wallet " we earn btc and store them into out bitcoin bank or i should say bitcoin banks. maybe it happen in future

No, i won't agree to the idea of a bitcoin bank. If bitcoin bank will be created then those bitcoin wallets that we use will be useless. We can't have our own privacy because we need to put it in a bank. They can hold it whenever they want. It will have higher fess than what bitcoin wallets require.

I think that you're right because we shouldn't think of banks when talk about Bitcoin.
The purpose of Bitcoin is to forget about banks

It doesn't go against the ideas of Bitcoin. It's just how you see it. Bitcoin was created to serve as a decentralized peer 2 peer currency that allows you to instantly transact with anyone anywhere in the world without the need of an entity (central authority) in the middle. Bitcoin bank is just a term that people take way too seriously here. It will be nothing more than a service that is operating like a bank (as far as it is possible), but it will function purely as an optional service. You aren't being forced to make use of it.

This is likely not something which folks mean here

And here they seem to be meaning that regular banks are going to adopt or accept Bitcoin just like they accept other currencies (i.e. open accounts in them), be it a local currency or a foreign one (like the US dollar outside the US borders). The difference is that adopting Bitcoin by fiat banks is not possible without prior explicit consent from the authorities, and people are afraid that by accepting Bitcoin governments are eventually going to own it

disagree with this, I like bitcoin because decentralized, low-cost delivery, indefinitely where and whenever. also easy when making the wallet, without requiring data such as opening an account in a bank, and of course tax is free

While this is true, don't underestimate the laziness of people, if they somehow think that securing their coins is too difficult you can bet a bank will seize the opportunity and say they can secure your coins for a price and then bitcoin banks will become a reality.