So we won't look like you.

[BushPilot] explained it well.

I've also read/been taught that the hair also serves to trap our individual body scents (from our sebaceous, sweat, and other glands), which can be arousing (or not). The sense of smell is particularly long-lasting for recognition/identification purposes. Many animals recognize each other by smell. Once you've seen or heard something, you might forget later or not be "sure", but the sense of smell is more permanent and can be very accurate....even if we are not conscious of it.....as in sexual pheromones.

The pubic hair also helps prevent chaffing from too much friction. It helps skin be more slippery.

Seriously? It's Biology 101. Pubes are a vestigial legacy of human evolution intended to protect the genitals of either sex who did not come out of the womb with clothes and didn't know how to make them. Some of us like the look as it signifies when a woman/man is adult and ready to bread. Again, vestigial visual reference stuff. And I prefer my women, womanly.