Securing Bitcoin seeds is a very serious task. I had a special notebook in which I wrote down the Bitcoin seed. And it was very convenient for managing your satoshi.
I like the analog world more than the digital one. But now I constantly live with a girl and my notebook had to be destroyed (much to my regret).
I burned it. Because girls are very curious. Therefore, my girlfriend would probably sooner or later discover a notebook with private keys, passwords and seeds. And I’m not ready to share such information even with my girlfriend.
Even if she couldn't figure out what it was, she could copy the information and show it to third parties.
From this I concluded that storing seeds on paper is not always (unfortunately) the best option.
I would say there must be some person apart from yourself who is aware of your seed or private keys to take care of our Bitcoins in case anything happen to owner. We live in uncertain world and there is guarantee of how long we will be around. Lots of Bitcoins are lost because there owners lost the keys or they are no more here to access them. In case you don't want your hard work to be lost forever, make sure there is next of kin to access them in case anything happen to you.