In other cultures where women's breasts aren't sexualised the children are actually fed longer. Getting more nutrition, it would be a total biological fuck up to make men desperate to get a hold of them when they're being used for their actual purpose.
Some societies like tiny bound feet, some like extended necks, or tattoos...
We live in a society with a breast fetish, that hides breast from society then tells men how great they are so it can sell them porn... western men have a completely fucked up view of women's breasts that we don't actually need to teach.
And even if it is true that some men are attracted to tits, many also like bums, hips, eyes, lips are all those there for men?
Are we going to tell little girls who haven't reached puberty their lips are for blow jobs?