Actually, I'm one of those people who memorize important numbers, such as mobile phone numbers, bank accounts, email passwords,
and some password exchanges. I do like memorizing important things, but I also make backups of all the passwords I've memorized,
by writing it on a piece of paper and I keep it in a safe place. Just in case one day I forget it, therefore in my opinion there is nothing
wrong if we want to try to memorize our Bitcoin wallet password or other important passwords. But remember our brain has limitations,
so always have a backup plan.
The only problem with relying on your memory is that most likely then you are using words or something similar for your passwords and hackers can easily hack those kind of passwords, unless you are using several words similar to what we see with our seed words, however I see that you also write your passwords in the case you forget and that is a great thing to do because there have been many instances in which for some reason I completely forgot an important password and then I had to look everywhere for the paper in which I knew I had written that password.