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 take it you’ve never been with a woman who enjoyed breast stimulation as part of sex? Baby feeding might be their “original” purpose, but it’s not the only purpose.
Well clearly there is no reason to sexualize masterbation either. Pretty sure orgasms can be desexualized as well. Artificial insemination is sexual though. /s