Bitcoin is hardly to be saved in a bank accept it is exchanged in a local currency of the land. This means that you must exchange bitcoin to the value of the local currency before you can make a deposit in the bank. i think bitcoin is mainly installed in the bitcoin wallet.
if the point is about saving bitcoins in some safed place - why not to chose one of bitcoin wallets? There are different kinds today. And it's right that novadays to hold bitcoins in a bank you need to cash it out in fiat of your country first, becouse there are no banks that would work with bitcoin directly today.
Bitcoin wallet are there to store bitcoin as banks don;'t deal with bitcoin directly yes i agree with you i am still wondering by this question which has been posted because all the bitcoin users know that they need a wallet to store bitcoin and that's the only way to store bitcoin there are different type of wallets like paper wallet, desktop wallet like electrum.