It's like breeding bulldogs and pugs. Your'e breeding something with a horrid deformity that can impact it's ability to live BECAUSE ITS PRETTY. That's the only reason. You value whats pretty over the overall welfare of an animal, simply because you like the color. Never mind your'e creating animals that cannot raise their heads without shaking, it's only because you think it's alright to create disabled animals because the color is nice.
You don't show ball pythons, you don't use them as working animals. You just want to be selfish and create animals with poor quality of lives because you said so. There's never going to be a good reason to do it.