Alright, I am going to suggest a book but bear with me. It is dark, but humorous. So if you not a fan of black comedies than it might not be for you.
It is call The Toy Collector by James Gunn. I have to confess it is dark and at time demented, but if you are looking for a thought provoking read than this is it.
There are some other book. Little Children by Tom Perotta, The Time Traveller's Wife by Audrey Niffenegger
Any of Steve Martin's books are fantastic....