Pet Sematary is one of Stephen King's best books. In my opinion this book is much better than any of King's new books, which are often quite bad (and boring).
Pet Sematary is an interesting, macabre and a bit disturbing book. It's a classic horror book - that's why you'll either like it or you'll hate it. I liked Pet Sematary, because it's a good old-fashioned horror book.
In my opinion this book is worth reading, because it shows how good a writer Stephen King used to be. If you've read King's newer books, you'll notice easily how different and how much better this book is from them.