I like paper books because they far more timeproof than any electronic medium. Some years ago, I bought an 1864 Greek-English dictionary, on the theory that I knew enough Greek letters from maths to read it. I couldn't buy a 1997 floppy disc, let alone a 1983 digital cassette, and hope to be able to read it.

An unknown manuscript of Archimedes' work was decrypted from ancient parchment a few years ago; and just google Oxyrhyncus to see the possibilities of human writing; none of that would have survived electronic recording.