I think someone else already mentioned it, but just to reiterate... Anything for other people who aren't my wife and future kids.
Password manager, file backups, photo backup, whatever.
If something happens to me, or I pass away, wifey has instructions on shutting everything down (probably should write instructions on how to save all the important stuff).
But I don't want to deal with other peoples stuff. I like tinkering with my server and different docker containers, etc. So I don't want someone complaining they can't access their photos because I wanted to try something new. Also, just don't wanna be responsible for storing their photos and important documents.