Cameron Diaz Tells Don't shave that pussy

I prefer a nice trimmed bush... I've found that red heads have very sensitive skin and shaving causes them to break out. Since DATY is my thing.. I like any clean and tasty pussy, take it any way I can get it!

My ex tried telling me that. If that's the case then why do you get shaved at the site of an incision.
Other explanations that I've heard are that it protects from rubbing or chaffing. I don't buy that either. It wouldn't make evolutionary sense.
The most reasonable explanation for pubic hair that I've seen is that it stores and helps distribute pheromones. Thus the primitive female with the thickest, hairiest bush would possibly store fertility pheromones for a longer period of time in her cycle and be attractive(on a pheromone basis) to more potential mates. In turn her ability to conceive would last longer than a woman without as much bush.
Armpit hair may actually have served the same purpose. Originally Posted by boardman

It is a sadly misconceived war. Long ago, surgeons figured out that shaving a body part prior to surgery actually increased, rather than decreased, surgical site infections. No matter what expensive and complex weapons are used – razor blades, electric shavers, tweezers, waxing, depilatories, electrolysis – hair, like crab grass, always grows back and eventually wins. In the meantime, the skin suffers the effects of the scorched battlefield.

Pubic hair removal naturally irritates and inflames the hair follicles left behind, leaving microscopic open wounds. Rather than suffering a comparison to a bristle brush, frequent hair removal is necessary to stay smooth, causing regular irritation of the shaved or waxed area. When that irritation is combined with the warm moist environment of the genitals, it becomes a happy culture medium for some of the nastiest of bacterial pathogens, namely Group A Streptococcus, Staphylococcus aureus and its recently mutated cousin methicillin-resistant Staphylococcus aureus (MRSA). There is an increase in staph boils and abscesses, necessitating incisions to drain the infection, resulting in scarring that can be significant. It is not at all unusual to find pustules and other hair-follicle inflammation papules on shaved genitals.

Sorry for the long explanation. I copied it from a medical journal.