This was asked by Puss_in_boots in another question I was asking women, but should be addressed in full by the men, perhaps with some help from the women here. I'm not sure this isn't another good topic to start out with. I have actually been asking myself that very question for years now. It's a great question, for sure. I don't feel I understand it well enough myself to give much of an authoritative reply. First, I find it interesting that the human female is the only mammal on earth that develops her breasts at puberty, and keeps them in the same basic form throughout her lifetime. They were clearly designed for more then feeding babies. Second, how interesting they are to men all over the world. They seem to serve for both sexes as the primary sexual identity of the woman. The breasts, :boobs more then any other single physical characteristic, tells all of those in view that she IS a woman, a female. Each woman has a unique breast: shape, volume, nipple, areola, color, sensitivity, wiggle/jiggle/bounce, firmness and for the most part in society, it is kept our of sight, especially from the male. For most males of mating age, this organ produces some sexual attraction and desire to mate, perhaps with someone who seems to be able to nourish the offspring. Certainly, the male lacks any real structure of this kind and just the idea that something is different then what he has, can lead to interest and enjoyment. The man learns that the female usually appreciates his interest and attention to her breasts and reacts in a positive way to his interests. Just the ability to see and play with some part of his partner's body that is not available to the other mates she has not selected, make his contact with her breasts much more special. Guys, why DO you find women's breasts so fascinating?? The women want to know. Perhaps you can explain.