I enjoyed parts of this book. I liked the way Diamond investigated certain areas of human life, such as how males became part of the care of babies and children, and how this is reflected in certain areas of New Guinea. But in saying that, I couldn't really get myself into it. I wanted to- I did, as sexology interests me- but I felt Diamond kept veering into other directions.

However, from an anthropological standpoint, this is a good, interesting book. It doesn't all deal with why humans have sex for fun and enjoyment, but it looks into the development of sex outside of ovulation, and how the idea of family developed.

So a good book, if you're into that sort of thing.