Someone asked me that If I felt offended after reading American Psycho. This was my answer:
"No, because the book is a brutal satire on the emptiness of capitalism and the obsession with image. Patrick Bateman is not a character to admire, but a caricature of narcissistic and violent masculinity. The disturbing thing is the point: to criticize that mentality, not glorify it. It is a social critique, not a manifesto. The chilling thing is precisely what it seeks to provoke."
It's a great book that bot everyone can understand.