[mmirate]

The inherent limitations of human memory likely made that person assume you use a single password everywhere. Your response makes me assume that you memorize a unique password for every account.

You do you; but personally, I would rather memorize timeless things like facts and theorems - or at least ephemeral-yet-important things like deadlines, decisions, names+faces, etc. - than memorize a ton of meaningless blobs of entropy.