Why Is Sex Fun?

Why Is Sex Fun? The Evolution of Human Sexuality is a 1997 book about the evolution of human sexuality by the biologist Jared Diamond.

Summary Diamond addresses aspects of human sexuality such as why women's ovulation is not overtly advertised; why humans have sex in private rather than in public like other mammals; and why the ovaries are U-shaped.

Publication history Why Is Sex Fun? was published in 1997 by Basic Books, as part of the Science Masters series.