Yeah I hear you. The stack just keeps growing. At one point my wife and I put a limit on how many new books we were "allowed" to buy before finishing the books that were in backlog. It was sort of like a "one in and one out" policy once we exceeded our limit lol. We based it on how fast and how many books each of us read so she was "allowed" to have 11 in backlog and me 4. I think we essentially did away with that rule though. I think I only have 2 in backlog at the moment but not sure what she has now.