When in 1953 Alfred Kinsey wrote about the mammalian nature of humans and how this affects our sexuality. He specifically criticized those who “assumed that heterosexual responses are part of an animal’s innate, instinctive equipment and that all other types of sexual activity represent perversions of the normal instincts.”15 He also wrote, “Biologists and psychologists who have accepted the doctrine that the only natural function of sex is reproduction, have simply ignored the existence of sexual activity which is not reproductive.”
