I've seen a lot of interesting and wonderful stories spawned from this discussion, but I think there is some perspective missing. The number of examples of books being lost is significantly greater than the number of examples of electronic data being lost. When we have an example like the Library at Alexandria for the electronic world, your case will be stronger. This happens automatically nightly. This isn't very feasable with paper material.
Paper is simply harder to copy.
A boss was looking confused trying to use the paper shredder when an eager young associate came up. The young associate inserted the paper in the shredder for the boss. But people don't install fire prevention devices in their home libraries either. When you get right down to it, the issues of preservation transcend media. Using acidic paper is as bad as not making backups.