Should the practice of animal breeding be retired?

I mean, if it actually has a purpose, I can understand it. But now, dogs are almost all domestic, and the health problems get worse with each generation of specialized breeding. Just let them interbreed. How would we like it if incest was our only option for generations?

Temple Grandin wrote about collies and how their brains were bigger a century ago, but specialized breeding has made their skulls smaller. It is making them more unstable physically and mentally. For what? FOR A POINTIER NOSE.