What I’m about to say may not be suitable for kids; however, I have to share it nonetheless. It's not pornographic - you're kid's biology class is less explicit than this post. But it does deal with female anatomy, so be forewarned. Some people are touchy about this stuff. Plus, the observation at the end is genuinely disturbing.
Fact: men are attracted by the physical nature of women. Just as with any other species, you can link a biological reason for each facet of the attraction. For instance, men are attracted to big boobs because healthy mammary glands means your offspring will be well fed.
The reason men are attracted to a big ass versus a scrawny nonexistent butt is because a big ass means good birthing hips and a healthy disposition. One more example is a woman’s pubic hair – if we weren’t wired to find that attractive, the human population would have died out long ago because this is ground zero for the continuation of your bloodline.
In the 1980s, 70s, and earlier, the ideal woman fit this description to a T. Sure, there was a brief mod phase and a Flapper phase, but that was small and fleeting. In fact, I’d go so far as saying, generally speaking, mankind has always favored this ideal of beauty.
But, of late the prevalent ideal has taken a strange turn. Suddenly, we men like our women super skinny. Marilyn Monroe and Ann-Margret would be called fat cows today. Furthermore, men now prefer the pubic region completely shaved. And this is where my theory goes gross. What does a scrawny chick with no pubic hair look like to you? Answer: a prepubescent child. WTF is going on? Do we even want to speculate?