Umbrage.

The thing is, I've had a number of instances where the paper copy of a book was so poorly typeset (usually overly long lines on too-wide pages, e.g., _The Inklings and King Arthur: J. R. R. Tolkien, Charles Williams, C. S. Lewis, and Owen Barfield on the Matter of Britain_ edited by Sørina Higgins) that I actually purchased the e-book version so as to be able to read it comfortably.