I love cats, they are my favorite animal to be around, I have four of them that make my life amazing. There are a lot of people in this world that like cats, and some that don't. But, even if you are of the cat-disliking mind set you can still understand that we have done some pretty horrible things to them in terms of anatomy. The one that comes to mind is making them brachycephalic, meaning their rostrum (nose) is shortened and squashed into their face. This makes for some cute kittens, but for some not very healthy animals. Brachycephaly makes it difficult for the animal to breathe and can lead to problems such as colds or pneumonia. Cats such as Persians and Himalayans are not the only animals we have bred for this trait; we have done this to pugs and American bulldogs as well. And while this makes them look cute, it is cruel and not something that should be desired if people truly love their animals.
Please compare this normal cat skull to these four Persian skulls.