Instead of remembering a master password, you now have to remember a sentence + a word for every site you want to use ("was it facebook, facebook.com or FB?").

Instead of remembering a master password, you now have to remember a sentence + a word for every site you want to use ("was it facebook, facebook.com or FB?"). Half the job of a password manager is to make sure you a) have unique passwords for each site and b) do not have to remember more than the master password. I sometimes use 1Password as a test to see if I even have an account if I visit a site I haven't been on in years.