I have come to a very similar conclusion a few years ago. We are not our bodies; In fact I think we might even be at war with our bodies. From the perspective of the body we are like a parasite. Our bodies are formed from evolution and we see how they reproduce. But once we move in and control it, we dont really have the same interest as our physical bodies. We are free.

That of course is a disaster for the bodies, which I think is the reason the body developed a whole array of defence mechanisms. These include desires, pain, emotions etc. These are all mechanisms trying to steer us in a direction that is beneficial for the reproduction of our bodies.