Indeed, Steppenwolf is a book of horrifying truths. Upon finishing the book, I could not help but question everything I held dear. It forces the reader to look around, and recognise the hypocrisy inherent in, not just society, but every action we do. The book does not necessarily do this by undermining, it merely praises certain attributes as isolation, revulsion and rejection.
I would advise you strongly to read this book. It is one of Hesse's best, and like his others, takes the individual as its focus. For all its pessimism, it is an incredibly uplifting book, simpy because it will open your eyes.