And even absent a safe... Absent a trusted family member pulling an inside job, how much risk is there really for an average--or even not so average--person to having accounts compromised because someone found passwords written down on a piece of paper somewhere in their house.
Yes, perhaps the equation changes if you have roommates/family you don't really trust.
Hundreds of years ago we have invented this cool thing called a Safe. It works better than 90% of tech-based security systems out there. Write something on a piece of paper, put it behind a locked door, and you will be safe from 99% of scams and attacks that exist. If someone breaks into your house, and get this piece pf paper they will be leaving real fingerprints, and real police will get involved. If noone breaks into your house, then only select few people are ever near that safe.