I was name calling the airport officers, not old people. :/
Still, If my life was depending on that, i would memorize the shit out of my seed whether if I was young or not.
Not everyone is alike.
I could memorize a 24 word seed even if just a good drink depended on it... on the other hand If my father's life depended on him memorizing it... he would be dead by now. I don't think he was always like that... so I must conclude that age is also a factor.
I fear that some day I could lose my memory as I consider it one of my main skills... but that can even happen not only by age but because an accident or sudden health issue so.... whatever you do, keep some backup of your seeds.
Also, a hardware wallet with main bogus wallet and an alternate passworded one offers great plausible deniability and should suffice for most situations.
But i think the most in here have there storage perfect safe