The mind cannot remember something important forever, especially a very valuable wallet seed, forgetting just one letter means you can't access your wallet. Even though your memory is very sharp, your memory will fade with age, or maybe there is something we don't want that makes our brains hit, of course this will make some of our memories disappear.

So memorizing the wallet seed is not a solution, it's better to write it down in a place that is waterproof and fireproof. Even if you want to memorize it, it won't be a problem, just think of it as learning to sharpen your memory, but keep in mind that you need to have backup storage. Don't rely on your memory to store something very valuable because it will make you regret it later.