To Shave or Not to Shave, that is the question. While the purpose of other areas of the vagina are more-or-less understood, when it comes to pubic hair, the answers are less clear-cut. We are not even sure why humans have pubic hair, since we're the only species on the planet to have it. It is believed to have something to do with the trapping of pheromones – the odors we secrete during sexual arousal. There are also theories that it helps with lubrication between partners during sex, or that it helped keep the genitals warm during prehistoric times. Whatever it's for, suddenly it seems like it is the norm for adult women to shave most or all of it off. This trend began in the 90s but accelerated in the 2000s where, according to a recent study, many young women today find pubic hair “repulsive.” They receive their cues not from men, it goes on to say, but from other women who also shave. So what should you do? The answer is: whatever you like.