That is certainly true, but I would prefer banks to save most of the money I have. Because it is a bank guarantee all the funds I have than the wallets of btc. And also the money we save in the bank protection of the State and if there is something definitely will get a compensation worth
but if someone will want to continue transactions from his/her money then for them I will suggest bitcoin wallet as with that he/she will not have to pay high fees of bank and will not have to visit bank again and again and will not have wait for longer periods o transactions.