Thomas Shey
Legend
Even books degrade. Paper oxidizes and eventually crumbles.
If anything, there's a lot more work needed to copy and save those, though you have a lot longer to decide to do it.
(In case I've never mentioned I'm a one time library assistant, so I think very much in these terms. People would find my data backups probably a bit OCD on the whole. I'm still grumpy there's no really easy way to save my Kindle books offline).