You trying to say that all men in non western cultures have zero interest in breasts is just plain wrong for one, for another cultures change over time, but genetics takes a much longer time to change. The amount of time it would take for breasts to no longer vary wildly in size and shape would be much longer than any one culture would last. My answer is based on evolution, yours is based one part of the world’s current culture when there’s still a large part of the world with different cultures, all of which still mix with each other which means there will still be wildly different breasts out there. It’s your answer that is very bad.