Last month I was in the middle of In the Garden of Beasts by Erik Larson and enjoying it when all of a sudden, it disappeared from my Nook right before my eyes. Every single book I had on this device vanished. Poof. It was an odd sensation -- like going to a magic show I didn't want to go to and having a prank pulled on me.
Of course, I'd like all 19 books to come back, but it's been difficult to retrieve them since I'm overseas. Even when I was home in Missouri last summer, I was constantly on the phone with Barnes & Noble's customer service for various issues. I had my Nook in one hand and my Kindle in the other, and in every situation, the Nook was Goofus to the Kindle's Gallant.
My patience with the Nook has played out. I regret ever buying it. As for In the Garden of Beasts, I want to finish it, but don't want to buy it again. Even if I could get my hands on a paper copy for free, I'm not sure I'd want it right now because it's all bound up with my B&N frustration, so I don't think the rest of my reading experience would be enjoyable. On the other hand, I hate having a DNF.