Bitcoin can be the future bank all over the world. It might be similar value of World Bank.
Now a days there are so many big transactions are done with crypto currency. If people dont want to tell globally about their transactions they may use crypto in big number of amount in a single transaction, and nobody else can recognize that why and what they do transfer.
If there any kind of illegal activities involved in that transaction then if there is bitcoin bank exist over there then some kind of transactions may be stop by the bank.
In that case all the government make bitcoin bank in future, they will ask for all accounts details and the person who access the account. If all holders gives them details then it will be it safe or not?
I don't know why the need when we are a bank of our own and besides we all want decentralization here and anonymity, so why push for this kind of program, it's a direct conflict from our interest, I don't think it will be supported if there are plans to set up one, and if you look at the poll many are against it.