I think waxing of pubic hair may be more common in persons under age 25 or so and less common as people age. As just one example, almost all patients in the hospital have pubic hair. and it also...
I would exactly say it is abnormal. A lot of people just "let it go" or trim with scissors. Some people prefer to shave, wax or nair it! It is strictly up to you and how you prefer your pubic hair....