I have read where pubic hair works as a protector for the vagina also from various bacteria.
Originally Posted by burkalini
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.