I don't believe I've ever said that. Can you please provide the quote. I'm sorry to say, but you seem to have quite a bit of an issue with putting words in my mouth or misrepresenting what I've said. There's too much here to correct each misrepresentation but I'll take a stab at a few of them.
How do you know that animals don't feel pleasure in sex? Where is your documentation of that? If animals don't have a biological imperative to propagate their species and sex doesn't give them pleasure, then why would they bother to mate? And if so called, lesser animals mate to continue their genetic line but higher orders of animals don't (which would make no sense, first of all) where is the cutoff line? Why are only 3% of animals monogamous? Why is homosexual behavior so common in the animal world?
I've never said that sex only exists to propagate the species. In fact, I said the exact opposite of that when I wrote "Certainly, there are other reasons for having sex, particularly in primates, than just continuing the genetic line..."
This is the second time in as many weeks that I've heard someone say that an organ of the body has no function (because it doesn't have free will). I'm sorry, but that is just about the most absurd thing I've ever heard. All body parts have functions, and need not have free will to carry those out. They evolved to do so because that was what was needed for that organism to best respond to its environment - which is what "Evolution serves itself" means. We didn't go from being single-celled organisms in a primordial sea to modern humans sending rockets to the moon by accident -that would be completely unrealistic. We evolved in response to the world around us in order to best survive and function in that environment. That's the whole point of evolution - adaptation to your surroundings. That's what the word means.
The cornonal ridge of the human penis doesn't have that shape, which just so happens to do a good job of displacing other sperm from genetic competitors, by accident. It serves an evolutionary purpose. It took on that shape for a reason, which is why not all animals have the exact same looking penis -they are all adapted in their own way to the specific needs of the organism.
What are the function of tires on your car? They most certainly have one, despite the fact that they do not have free will. Vitamin A is required for good eye function - no independent will necessary.
This has been a somewhat entertaining conversation, but I think it's time for me to call it day.