Yeah they're seen as sexual organs, but are they? Not quite. It's mostly only the western media and society that sees them as anything other than nutrition for babies.
I don't know where you got that from but the vast majority of countries around the world consider topless women to be indecent. It's just social norms, it's not a double standard. We have different equipment, and its generally agreed that breasts shouldn't be shown.
The fact that a vast majority of the world sees women's breasts as some sort of taboo that is only for sex instead of their actual purpose of feeding tiny humans is kind of the whole reason for this argument. It's a double standard that guys can pose half naked, but when girls do it she's automatically labeled a slut. Breasts should seen as a way to feed a child first and foremost.
Putting aside whether breasts are sexual organs, thinking breasts shouldn't be exposed is not a double standard. It doesn't matter what their purpose is.
Also I think Ontario has the same thing that metalman said.
Being a woman, I do not understand that this is even an issue. The main purpose of MY boobs is not 'feeding tiny humans' but having fun in bed. That's also the reason I would never ever feel comfortable showing them to everyone. It's rather private to me. But to each their own, I guess.
Also I think Ontario has the same thing that metalman said.