Thanks, Hambydammit.  That was a good read, though I did come away disappointed.  I always do from the subject of human sexuality.  I always feel as though something is missing and indeed, something is missing.  This topic is typically linked only to the essentially reproductive drive in humans to mate (what you describe perfectly here in all its glory) and I thoroughly agree with your essay in all its points as I find it agrees absolutely with all the other literature I've read on the subject over the years.  The thing that's always missing for me is the sexual drive of homosexuals in coupling.  Clearly, the reproductive aspect is missing, or it would seem to be.  I've never been able to find any literature on that subject at all and I feel certain that none of it is adequate if it does exist.  Do you have any thoughts on the nature of human homosexual sexuality?