One person's stain of character is another person's "gross," I supposeSo you're saying PDFs have no character.We used to say it wasn't a real character sheet until it had a stain of some sort on it. If you have an iPad, the last thing you want is a stain.

The source book also makes a nice companion when I'm in a waiting room for a dentist or whatever and I don't want to read last January's "Sports Illustrated" or "Field & Stream".
See, that's one of the bigger reasons why I prefer digital so much. It's easy to carry. You have your one source book at the waiting room, I have my whole library ;p