As the author of a digital photo and video management system, it pains me to agree with you.
PhotoStructure will get your piles of digital files organized, but it can't guarantee that the disk won't crash, that you have a backup, or that the computer won't go kaput. A printed book on acid-free paper and archival inks can just sit on a shelf and be fine and readable by anyone 50 years later. No technology can say that.
Also: assume the images are irrelevant by default.
Try to write something on the back of each photo explaining why it's relevant. At least write when it was taken. Bonus points for who is in it, and the event.
When my brother and I went through boxes of old photos without annotations of any kind, and not being able to ask who's in a photo, or when it was taken, or why it's important, meant most of the contents were irrelevant to us. Very sombering.
How can I secure this collection for my children, when I have passed on, how can I ensure that they can access and get a copy of the files?