It's not that I don't want body hair, but it's like beards. . . I like to choose who has them. I especially don't want the game to add orange beards to random sims! So, same thing.
I found 2 solutions for the random body hair on generated NPCs and to stop new body hair on my female Sims. First I had to remove the body hair from all of the existing NPC who I didn't want to have it. Then I installed a Bienchen mod "norandomhatsaccessoriesandmakeup" to stop new NPCs from starting out with body hair. Then I found a mod to stop automatic female body hair by False Hope "No Female Body Hair." While this mod only impacts female sims, it has really stopped the teenage girl sims at the beach from being covered in orange fur!