There is no one answer to this question as there is no one reason why we have hair on our bodies. While the function of hair varies from individual to individual, it generally serves to protect our skin from the elements and helps regulate our body temperature. In terms of evolution, hair may have initially developed as a way to ward off predators or keep warm in cold climates. However, the reasons why we have hair in specific areas, such as our buttocks, remain largely unknown. Some individuals may find that hair around the anus helps to trap feces and prevent soiling, while others may simply prefer the aesthetic appeal of a hairy bum! Ultimately, it is up to each person to decide whether or not they want to remove their butt hair.