My father told me he wanted to make USB flash drives of all the scanned and digitized family photos and other assorted letters and mementos. He planned to distribute them to all family members hoping that at least one set would survive. When I explained that they ought to be recipes to new media every N number of years or risk deteriorating or becoming unreadable (like a floppy disk when you have no floppy drive), he was genuinely shocked. He lost interest in the project that he’d thought was so bullet proof.
I still have a dvdr and good quality discs stored properly can last decades. Not perfect and harder and harder to find readers, but for long term backups its an affordable solution.
My family data vault has three dvdrs still in the box just in case 40 years from now you can’t find a drive.
That said, we will probably be moved beyond SATA then so…