@Drakej,
Many of humans actions and beliefs are based upon a survival of a tribalistic soceity
for example, women with physical characterisics of a good mother are usually seen as more attractive, subconsciously that is.
guys like big boobs, because it indicates the woman has plenty of milk in her breasts, most men don't know this is why they like big boobs.
in harsh survival conditions a women with more milk in her breasts has an advantage to raising children over a women who doesn't.