AB is lucky as it has as one of it's posters, an internationally respect expert on women's breast ,from an anatomical point of view, social aspects, form and function and more importantly their sexual importance.
The subject being so all enthralling that I will precisely the subject.
Firstly, the virgin breasts , those in a woman who has never given birth. This group will always be looked upon in a sexual nature and by that I mean, playing an important part in the heterosexual function of foreplay and sexual intercourse and this is common to all cultures.
The shape, the consistency and the relation of the nipple to digital stimulation all play a major part in assessing the allure of the virgin breasts.
Now, the breasts of the women who have borne children and here a problem arises immediately and the scene changes when one is considering the sexual aspect of the breasts by males. They have lost their magnetism for male sexual exploits, both in fantasy and reality, but nil deperandum.all is not lost for our female sex.
Underwear, clothes and attention to demeanour can restore the past state of play and that is so for all cultures.
The female breasts as glands for neonatal feeding play no part in the male appreciation of the mammary glands.
It is not in the remit of the OP to discuss the breasts as a excitatory experience in the aspect of foreplay.
The comments above have been confined to heterosexual cultures and ay ot represent the feelings of the hpmosexual community (gays and lesbians)