I bring an e-reader because TSA ruined a paperback of mine years ago just cramming it back in my bag and because I was held up l, I had to sprint to my gate and I couldn't get the book out until after barely making it on the plane. By that point, the damage had been done and there was no fixing it. It was a secondhand paperback, so it was already gentle worn. But that day was the reason why I later had to tape the pages together. At this point, I'm traumatized by the experience. Never again.