No one bank accept bitcoin in present time because bitcoin is digital currency and it can be use use just for online transaction and i think it can be possible that bitcoin accept in bank if bitcoin become in physical shape then i hope that we will be able to use it in any local shops .
i agree with you that no one bank accepting bitcoin because bitcoin is just a digital currency and we know that bank just accepting regular currency fiat but i hope bitcoin will become in physical shape and then all banks will be accept bitcoin and i am sure it happen will be in future.