If wemon were shirtless all the time would men get aroused? Or is it nature? I personally think its nurture. In the old days wemon were shirtless. And the breasts dont have any sexual porpoise.
That's an interesting question. I can't help but think of the secrecy issue. To see what one is not supposed to see. Or to have exclusive access.
What about the effect of not wearing bras, or constant exposure to the elements? What if a natural response is dimmed by both the lack of secrecy and
the physical changes that result from this lack of secrecy?
Another factor might be the eroticism of richer societies with more leisure. Perhaps we just have sex on the brain to a much greater degree. And women are then more motivated, perhaps, to think of and treat their breasts as erotic rather than nurturing.