I think the reason is that it just feels insecure. If you keep all your passwords in your head, then you have full control. Using a password manager means handi

I think the reason is that it just feels insecure. If you keep all your passwords in your head, then you have full control. Using a password manager means handing them off to something else, whether it is a paid service, a piece of software, or whatever. It feels like a "cat's out of the bag situation", that once you let the password escape that first container (your mind), it will inevitably spread everywhere. I'm not saying it's rational (I'm a happy customer of 1password), but there is something a little bit scary about letting go of control of your passwords.