I don't see what makes this so different from leg hair. Our species needed it at one point. By not selecting to mate with these women based on our personal preferences would make this hairy arm gene obsolete. That's natural selection. Don't shave...that's the only way to get rid of the epidemic.
I'm joking of course. If you have hairy arms, you should probably shave them. However any guy who would decide to not like you based on something this small is obviously a jerk to begin with and not worth your time.
We call her werewoman not because of her arm hair, but because of her unhealthy obsession with wolves. She's in my animal science class and seriously has an obsession...but I guess that's no different from my obsession with fish. Somehow I get away with nobody making fun of my obsession.