How Man's heart wasn't built for monogamy

Sometimes we forget that, even though we've wrapped it in a refined silk of moral concepts and profound feelings, love and sexuality are still Nature's way of having us happily taking care of our species reproduction. So in very basic terms - which are true even nowadays but not compulsory to be so - one ondividual from either sexes feels attracted to whichever best member of the other sex he can find. Of course, this is highly objectable because, fortunately, our minds have gone a little beyond the solo need to carry our own genes in a most pleasureful way. Even though, as complex as our methods to chose the best match might have turned out, there is one thing that will never change: we truly believe in other people's own criteria of selection.
In a crowd, the one girl who draws every gaze to herself, who finds nothing else but flirt in every man's words addressed to her, who seeds into couples the belligerence of jealousy, is most likely the one that will look the fairest, not necessarily because she actually is the prettiest, but simply because that particular situation she's into renders her irresistible. Here, I prefer to talk from a (straight) man's point of vue since my knowledge of sex-appeal works better that way.
It is actually very good a match-picking method to feel attracted to the one every one else likes. Statistically, chances are the girl who has such an easiness to find someone for herself is the most interesting one, because the odds that so many people may have seen it wrong are just -let's say - sucky.
Unfortunately, this fame-based system is totally incompatible with monogamy. It might be that you have found the best one, but you also have found the one which everyone else thinks is the best one. Chances are you're going to end up heart-broken or simply rotten down to madness by jealousy itself.
Now the reason to why people do this is still a mystery to me. Well, actually, there are several possible reasons and they are probably all at work here. First, it is, as I said it before, simply good sense to prefer the one everyone else prefers. Second, you may add to that the fact that if well-succeeded, that person will not only get the most-popular girl, but he will be envied by everyone else, which I guess is good because it makes him feel like there is a reason for his presence on earth and, particularly, in human society. But that's stuff for another post.
My point is that the probability of being heart-broken by the person you feel attracted to is simply huge.

I know all this is all pretty obvious, but what's a man to do to fill his blog...