Hard to say. It could be a number of reasons. It could also be that most men define a woman as one "who has big boobs". I like them all sizes, so I am not fixated on just one size.
Why Men Like Big Breast Women?
Really it is all about eating meat. Meat makes the breasts large, and lots of American men and women eat meat.
Men like breasts of various sizes, not only big ones.
