In just about every species they are classic examples of just barely good enough to get by implementation.
If they are all barely good enough then why are a myriad of species doing just fine? Creatures on the extinction watch list are those that have been relentlessly hunted by humans. The physical process of sex has never been a problem for any known animal. In fact, the biggest problem is just getting them to try to mate, rather than the actual process itself.
This is particularly true in the evolved primate called man. There is lousy fit between the males penis and the females vagina,
A lousy fit? In comparison to what?
the males sperm are released way away from the females eggs
And yet, miraculously, only a small percentage of the human population is incapable of reproducing.
the womans body produces enzymes that tend to obstruct and kill off many of the sperm even inside her
Again, amazingly millions of people are born every year. The efficacy is not effected by the enzymes.
the male's sperm are so heat sensitive that the producing organ has to he hung outside the body where it is vulnerable to damage
The fact that sperm are so heat sensitive and that the scrotum will retract in cold weather, and let it all hang down in hot weather is an amazing feature. You criticizing the only design you know of should compel you to make a better design.
and the males penis is simple an organ that was co-opted to serve multiple functions, only one of which is related to procreation.
Multiple functions? Urination and ejaculation are the only uses for the penis I know of-- unless you're into some freaky sex acts.
There are designs where the act of copulation kills the male
So? Bees die every time they defend themselves or the Queen by after stinging its invader, removing themselves disembowels the bee.
Short comings do NOT get picked up early and corrected but as long as the current solution is just barely good enough to get by, no changes or improvements are made.
According to what? Marine biologists say that the shark has evolved little in the last (x) million years because its so well suited to its environment that overhauls have never been necessary. Any organism not suited to its environment would be severely effected by natural selection. The specie in question, whatever it may be in this case, must wait for the introduction of a beneficial mutation to be selected or it will go extinct. I want to know which species have gone extinct because their sexual organs were so poorly designed.
"A man can no more diminish God's glory by refusing to worship Him than a lunatic can put out the sun by scribbling the word, 'darkness' on the walls of his cell." -C.S. Lewis