Here's another little history less to demonstrate how silly your claims of "biology" and "evolution" are:

"Historians reckon that women only began to cover their breasts in public about 3500 years ago — when men decided they were private, sexual body parts that needed to be tucked away. Prior to that, artwork from the era suggests that women were able to wander around topless without anyone batting an eyelid. Even during the days of Ancient Egypt, historians believe that women could choose whether to cover their breasts or not — often opting for elaborate dresses and designs that would leave one breast exposed.

It’s been noted that as women were more and more forced to cover up in Ancient Greece, the more patriarchal the society became until women were fully under the authority of fathers and husbands."

And this aside, have you never seen a National Geographic magazine? There are dozens of cultures around the world where women routinely go bare breasted and it's fine, because it's normal.