I, for one, can't stand it when a book is looked down upon because of the subject matter alone. Just because a book isn't 60 years old, and has a setting in urban crime (for example)doesn't devalue it as a book.
My all time favorite author is Elmore Leonard. He is bar none, the best in dialouge and character development. The way he crafts stories and plot points is beautiful. But, everytime I read him, a friend of mine will look down his nose at me and read his newest copy of the Glass Menagerie.
B.S. if you ask me