“Breasts are a “private” part of the body imo. They are for sexual/reproductive purposes.”
They may be private but they are not required for ‘sexual/reproductive’ purposes.
Well they are not “required” no, because technically a woman with no breast tissue can have sex, and subsequently have a baby, without them. BUT nobody can deny that they are a part of the female body for 2 reasons and those reasons have to do with sexual arousal and nourishment of a baby. Hence the association with sexual and reproductive.