Cant use password manager either for most of them. example ICICI (one of the biggest private bank) doesnt allow you to paste passwords either. Only way to use password manager is to meddle with view source to allow pasting.
What is the actual logic behind banning pasting, anyway? Is it just anti-scripting? If so, it seems like locking the account after a small number of bad attempts would be enough.
1: https://chrome.google.com/webstore/detail/dont-fuck-with-pas...