They’re a secondary sexual characteristic, so it seems like something that would get attention.
To activate monkey neurons, it has to be an indicator of health.
As an example, large breasts indicate health, as malnourishment during adolescence tends to result in smaller breasts later on.
Muscles indicate health as well, so they tend to be considered attractive.
For non health related features, like a symmetrical face, those ones are the non sexual dimorphic characteristics, as those ones you care about transferring regardless of sex. Both men and women want a symmetrical face, basically.
So a large Adam’s apple is both a dimorphic feature and a non indicator of health, so its ignored.
“Small” breasts typically are still large compared to a man’s chest.
There are other factors than size anyways, for any feature. For breasts as an example, symmetry, skin clarity, and firmness will also signal a healthy prospective mate.
“Small” breasts usually actually means “not sagging due to age”, as naturally speaking breasts, cheeks, and the neck of humans are common areas where sagging due to collagen levels can be witnessed in older age, so these are common cited areas of sexyal attraction.
So “small” breasts really just means “not old”, which is fairly normal to signal the health of a potentional sexual partner.
Ok smart guy, explain this: I like mature women, ass play, humiliation, and bondage too. Sometimes simultaneously! Take that, evolution.