However, memorizing seed phrase should be "one" of many ways to recover your coins, which mean you should do any other backup ways. If you only relying on your brain, then you're high likely will lost access to your coins.
No one know what happen to you in the future, so prepare the worst.
Nothing wrong with memorizing but but even you look at our nature as humans we can forget and if the seed phrase is not complete their is no way you will be able to make withdrawal from your wallets that is to show how important all the seed phrase are complete. Instead of memorizing why not look for other ways to store your seed phrase and safe your self the stress. With the kind of challenges we are facing you can easily forget no matter how good you are, I don’t know for others but as for me I don’t see as an option for me if I want to store my seed phrase. Their thing to just avoid when you want to ensure the safety of your assets. Anything memorizing I don’t like it.