What do you mean a "bodily function?" Like a good bowel movement maybe? Or a big belch to relieve gas?
You sound like a psychopath I once knew, who actually made those comparisons.
Good lord!!! I know anonymity on the internet seems to have been taken by most people as license to be as nasty as they possibly can be, but this is over the top. I stated a simple biological fact. Sex is a bodily function -- like breathing, eating, sleeping, and all of the other things that are part of what distinguishes a living being from an inanimate object. Your mind made something weird of that simple fact, not mine.
Obviously, human beings are capable of enjoying sex for its own sake, beyond the biological imperative of procreation. We are also capable of perverting sex way beyond its basic purpose, which -- in case you missed it -- is the general point of the posted article. That's what I was commenting on. Where your mind went with what was a straightforward point...well, I'd be careful about throwing terms like psychopath about if I were you. Just sayin...