>>10897306>the averageBecause that's not how diversity works.
Say you have a field of flowers. Each of them, individually, is beautiful and fragrant. There are myriads colors, bees love them, and every year new seeds are spread further and further across the field.
One day, some faggot comes along and decides that survival looks like exactly one thing, and tries to breed all the flowers together to make a superflower that can survive in any environment.
He goes on breeding, the red flowers into the green flowers, the greens into the blues, and the blues into the reds. He takes the most average from each generation and breeds them further, creating an incredibly average superflower with all the traits of all the flowers.
Since it is perfectly average, the color has become a very average shade of grey. The fragrance still varies between samples, but this is more an artifact of their not being an average smell due to lack of quantization method. Even so, much of the fragrance has been lost, and bees don't find this flower very attractive.
The same thing has happened with breeds of dog. Genetic diseases pile up and a purebred suffers the worst effects. We could easily fix it by introducing some natural mutt diversity into the otherwise fine breeds, but this is backwards and only leads to the same slopes as before. The curve of evolution works best when there's a diversity of genes to work with, and the pool can mix properly.
TL;DR: Evolution already does the thing you think of as "eugenics" via natural selection.
