The problem of seeds is obviously crucial. Can we imagine being the one and only person who knows what to do with these 12/24 words? How to keep them safe, but also how to pass them on to heirs or friends (so that they know what to do with them?). Informing others while preserving your own security can be a real challenge in some countries.
And then there's betrayal, divorce etc...
What are the solutions?
The issue of these seed phrase is something else, almost everybody have their own method of handling the seed phrase because once you are no more, if no one knows about your seed phrase, your Bitcoin is gone and can never be recovered.
Family members are the only closest people to have assess to your seed phrase but trust is limited now, you can hand your seed phrase over to a family member how and your coin might be missing, that is why sometimes it is better to keep it to yourself.
However, if. There is no any other choice, if you have a children, you can educate them about Bitcoin and how it works, hand one of them over the seed phrase so that your wallet can be assessed after your departure.