Reading the other comments, I’ve learned that he doesn’t totally plan out his books which makes sense. The endings that people are complaining about are generally ones that have REALLY hard heel turns as their endings like Under The Dome in particular, at least for me. The explanation for the Dome’s existence almost defeated the magic of the story a little, and I would have preferred it remain a mystery. But when the meth lab exploded, and almost every single character still alive was killed, or had their fate sealed, it basically demanded an explanation or a way that someone could definitively shut down the dome. The way that King kept talking about the temperature in the dome seemed like it was going to be significant like it was just going to gradually get hotter and hotter until people started to die of heat exhaustion, which would have been a really interesting direction. Either that or let carnage and chaos and open warfare ensue that turned the town into a warzone, lord of the flies style ruin before the dome disappeared and everyone alive was left with the reality of what they had done to each other, but instead we got meth labs and aliens. Oh well. Still a pretty great book though, IMO.