brains get injured .
I have been beaned with a golf ball. Walking outside a gold course.
I have hit my head on a windshield in a car accident.
As far as I know I recovered with out any important memory loss.
My bro-in-law has dementia from a stroke he suffers from permanent memory loss.
High fever can hurt you brain
Bee stings in bulk can hurt your brain
the list goes on.
Listen, everything comes to potential risks and benefits.
If you memorize seed phrases, no one will ever be able to steal it from you because there is no physical copy and no one can enter your mind right now, no one will probably assume that you remember seed phrases either since it's such an unpopular method. This is the benefit of memorizing but potential cons are the probability of forgetting your seeds but to nullify this risk, you can repeat your seed phrases every day multiple times per day for months and so on. This way, it will be sealed into your brain so much that it will almost be impossible to forget unless you get dementia or amnesia.
If you don't memorize seed phrases and save a physical copy somewhere, there are lots of threats in front of you.
1. Someone might accidentally find a physical copy and steal it.
2. If you tell a location to your spouse in case something happens to you or your memory, you are still risking and are trusting a third party.
3. The existence of physical copy itself is always a threat
By the way, when it comes to memory loss or a brain damage, if you get such a brain problem that you don't remember things, then you might not remember that you have a Bitcoin or you might not remember where you saved your seed's physical copy. That's why I find this argument very weak against my opinion about seed phrase memorizing, especially when we talk about 12 words.
