"Watchtower felt that it was not theocratic for field service, and brought too much attention to a female." Thank you, Petra!
I remember one young couple, newlyweds, who moved into our cong and the sister had long beautiful hair. I was a newbie and could not understand the flack she got about it. It was THE talk of the cong. I kept thinking, "Isn't this mean to her? Aren't there more important things to be concerned with?"
Looking back on it now, I guess it's the rough equivalent to a brother with a beard, another crazy anti-fetish in Witnessland.