Amazing bro,

Now you are happy to know why of your own flirty and lecherous nature and want to keep justifying it with some theories, huh ?

Brother, today’s human is not just a product of natural evolution but also of some 8,000 years of civilization and culture.

So I guess you will also have to account for the cultural part too.

That said, a new and hot discipline called “evolutionary psychology” is emerging lately trying to explain why we think what we think.

I must warn that the discipline is at infancy and a lot of popular discourse based on them should be taken with a lot of salt.

The diversity of behavior among species, importantly- among the close species, in many instances are pretty high and confusing rather than conclusive for the kind of conclusion we like to draw.

So just be careful to make claims and justifications based solely on them, hai ?

You might want to read the following books as a starter (I myself haven’t ).

1. The Mating Mind: How Sexual Choice Shaped the Evolution of Human Nature (2001)

Geoffrey Miller

Review:

Evolutionary psychology has been called the "new black" of science fashion, though at its most controversial, it more resembles the emperor's new clothes. Geoffrey Miller is one of the Young Turks trying to give the phenomenon a better spin. In The Mating Mind, he takes Darwin's "other" evolutionary theory--of sexual rather than natural selection--and uses it to build a theory about how the human mind has developed the sophistication of a peacock's tail to encourage sexual choice and the refining of art, morality, music, and literature.

Where many evolutionary psychologists see the mind as a Swiss army knife, and cognitive science sees it as a computer, Miller compares it to an entertainment system, evolved to stimulate other brains. Taking up the baton from studies such as Richard Dawkins' The Selfish Gene, it's a dizzyingly ambitious project, which would be impossibly vague without the ingenuity and irreverence that Miller brings to bear on it. Steeped in popular culture, the book mixes theories of runaway selection, fitness indicators, and sensory bias with explanations of why men tip more than women and how female choice shaped (quite literally) the penis. It also extols the sagacity of Mary Poppins. Indeed, Miller allows ideas to cascade at such a torrent that the steam given off can run the risk of being mistaken for hot air).

That large personalities can be as sexually enticing as oversize breasts or biceps may indeed prove comforting, but denuding sexual chemistry can be a curiously unsexy business, akin to analyzing humor. As a courting display of Miller's intellectual plumage, though, The Mating Mind is formidable, its agent-provocateur chest swelled with ideas and articulate conjecture. While occasionally his magpie instinct may loot fool's gold, overall it provides an accessible and attractive insight into modern Darwinism and the survival of the sexiest

2. The Evolution of Desire: Strategies of Human Mating (1994)

David M. Buss

Review:

Evolutionary psychology--or, in the vernacular, "instinct"--rules the dating and mating game, and this scientist's discoveries are bound to clash with theories of patriarchy that purport to account for male dominance of wealth. Buss' synthesis of many studies conforms with popular wisdom: Women want an older man with actual or potential means; men want an attractive, younger woman; and men have a much greater proclivity for promiscuity than do women. Why? The reasons reside in vestigial "cues" that favored reproduction in the pre-agricultural epoch of human development. Then, when a poor decision in mate selection imposed devastating material costs on the female, a dialectic of attraction strategies developed so that a desirable mate could be gained, held, and defended against interlopers. The ancestral origin, Buss explains, is apparent in courting techniques (such as his researchers recorded in singles bars) or in the emotion of jealousy, the actuator in alerting and defeating rivals. Libraries may be overrun by anecdotal accounts of sex, even the good ones like Sex: An Oral History by Harry Maurer . But Buss steps back from the mechanics and emotions of the matter and insightfully complements the multitude