OK it makes more sense to me now. I think it's statistics. The majority of computer users are men. The majority of digital artists are men. The majority of men like to look at naked women or women in general. (This is why porn sites are the only internet industry to consistently make HUGE profits from day one. One woman with a web site filled with pictures of just her and netted 6 million dollars last year.) I don't think it's about professionalism; I think it's about profit.