Perhaps it's a bit taboo or more benignly, just under the surface of public consciousness, but perhaps one reason men and women have a hard time in the US and other western countries getting together romantically and erotically, is that they're becoming too much alike.  Having traveled a lot, I do notice this to be true.  Considering we are attracted to opposites, masculine and feminine, yin and yang, if men and women were to become just alike, it would cause the two to feel repelled by each other instead of being drawn together.  I can speak only for myself, but I can't say I am drawn to manly women.  

I was thinking of that recently when I saw this article about how women's voices are becoming deeper (link below).  Instead of looking at each other as enemies to be overcome and beaten, maybe we should look at ways we compliment each other.  I think the world would be a happier place.