when humans learned how breeding works. how you can change the color of any flower from the seeds if you know what pollinates it aka DNA statistics.
the uniqueness of each societies culture dictates how that society is bred. for some tribes people with very long necks were considered the most desired to reproduce. ideally what WE want to breed is for willpower, curiosity, imagination, and health: otherwise where are we headed?
genetics play a huge role in the strength and survival of our species. through our lifetime our genetics can either deteriorate or strengthen based on our lifestyle AKA what we eat, breathe, and put on our skin.
religion may be crazy but it did guide people towards the correct way of breeding. as of today breeding is mostly based on looks and this video shows you what happens when you breed for looks.
Yeah we seriously played god with dogs in creating a bunch of breeds. Many which have no function at all other then to look cute but have a whole host of issues with them because of it.