Love Or Biology
Take your pick. Or choose not to choose. It really won't matter. Are we slaves to our base desires, or are they created by our "higher" intellect? Are the "sainted" few who are redeemed by their "purity" any better off for it? There is no denying that some people have been made miserable by the "needs of the flesh", but most people fall somewhere in the middle. If we had no strong biological drives would we "forget" to reproduce? If that did happen (and it may have happened to some species) extinction would be quick and certain.
All we can do is form an uneasy alliance, body and soul, and try not to get too weird about it.