what do you mean don't need? of course we still need a bank. Banks are financial institutions that function to collect funds from the community and are managed for the community again. even though someday crypto is increasingly popular and more and more users. banks will still be needed as a place to borrow capital. and many companies or factories that need banks as a place to borrow capital. I think banks and cryptocurrency can run together without having to eliminate one of them. even they should be able to support each other.