Disappointment and horridness

I am focusing this post solely on one book because I didn't like it. I picked it up at the airport as it sounded perfect for me. The cover was of a beautiful, colourful, fragmented butterfly, and the subheading is "short fictions and wonders". The book is called Fragile Things by Neil Gaiman. Of course I have heard of him and I thought he wrote magical stories, although I hadn't read them before. I don't usually read the introductions of the book, but this one was intriguing as the author explained his reasoning for writing/including each of the included stories. The book was described as "extraordinary, complicated, hilarious, melancholy, and terrifying". The first ten were exactly that, magical, clever, thoughtful, creative, but the 11th was really horrible and there was just no warning. It was such an unexpected switch! The language was offensive as was the topic, human trafficking, paedophilia, etc. - why would you include those topics in a book with magical stories in it. I was really disappointed and I am unable to finish the book, which might get better, but I didn't want to take the risk of further horrors. I know people have different tastes, but I just didn't expect to find such contrasts from magical to horror, and had I had the slightest hint that this was coming up, I wouldn't have bought it.