I have a password manager too, it's called a usb stick (and a hard copy locked in a fireproof cabinet) for when the grey matter in my skull cannot remember the right password for an account.
I am old school and not really ready to entrust my passwords to a browser or third-party bit of password management software. Thunderbird email is the exception as I can set a master password to protect my login details on that. Yes Firefox offers the same but I don't want to risk my financial account passwords or anything else I log into to spend money being stored.