Did the book come to a satisfactory closure for you? Why/not?

The book did not come to a satisfactory closure for me, but I feel like that was the point. It definitely felt like it was leading us towards the second book in the trilogy. At the end, Lyra and Pantalaimon were facing a really hard decision, with all odds against them either way. I would elaborate more on the ending of the book, but I don't want to ruin it for anyone who hasn't read it. By the end of the book, we understand the nature of Lyra's "betrayal," as prophesied at the beginning by the Master of Jordan College. Or actually, maybe it was Farder Coram, I don't really remember who said it, but Lyra had to betray someone, we didn't know whom, and we didn't know how. All we knew was that Lyra had to commit this betrayal without knowing what she was doing. By the end of the book she has done that. Philip Pullman also lets us understand more about Lord Asriel and what his relationship with Lyra is like. It changed drastically throughout the course of the book. At first, she feared and respected him. In the middle, Lyra's admiration for him grew and she fantasized about her life with him as her father after the war was over. At the end of the book, however, her feelings for him shift to the other extreme. I won't go into why. Philip Pullman also ties up all loose strands about Dust and its role in the Church. So I guess it does come to a satisfactory closure, but it also leads us into the next book.