Ummm....what is that monster hand reaching for his butt?
But seriously, I think that probably women find some penises attractive and some not-- they do come in a large variety of configurations. Since a woman normally would not see a naked man until she was "interested", the conformation of the penis must not be that important.
It's also my understanding (although being a man I don't really) that women are not nearly as visually-aroused as men.
Personally, I find that in general a nude woman is beautiful and a nude man is comic.
In ancient Greece, especially Sparta, it was very common for men to be nude in public but not women. So for them at least, the penis must have been important in one's everyday appearance.