I worked in a developing country for three years. Women’s breasts were not considered private. As a result, I saw breasts frequently. By about month two, a uncovered female breast was about as interesting to me as her elbow. There’s no reason to sexualize the breast. They are baby-feeding organs. Not to go all Freud on you, but I wonder if it’s a remnant of the breast-feeding positive feelings.
I think this holds true in general. Just don’t sexualize people, their bodies, body parts or whatever. Let them be. No catcalling, staring… do away with the associated old religious shenanigans… It’d be a more comfortable and free society for everyone.