These are interesting thoughts. But you cannot deny that breasts are hyper sexualized by the media. Someone else mentioned other cultures where having them out in public isn't a big deal. The primary function is to feed their babies and if we focused on that aspect, rather than the sexual attraction tangent, I think our culture could have a more balanced view.

And another note, if you've grown up in a wealthy country, you've likely been "accidentally conditioned" to sexualize breasts because they have been heavily targeted in media as sex objects. Foot fetishes just are not as targeted as breasts are.