You are not refuting my point. You're making it for me. What part of the human body? Reproduction requires opposites, like I already stated. I found heterosexual sex beneficial to my needs and all preference related sex is entirely self-serving. But, you are not refuting my point because we are not discussing the same thing. You are referring to the organs inside the body. I am referring to the body itself. The organs can be removed from the body and the person still has a body. The organs die without the body.