Why is Sex Fun? by Jared Diamond is a very interesting and informative read, similar to a well-written research paper and slightly more engaging than a textbook. The chapter break up is well thought out and all information is presented succinctly, making it flow just fast enough that you can keep reading through without (too) many breaks. However, there are so many aspects to human sexuality it is easy to get lost in it. Ultimately, after reading the book I still can't say I