I've just haven't had universally good, or even clear majority good, experiences with cats. I don't "dislike" them, but I don't choose to like a given cat by default, because I never know what I am getting into. The cuddliest cat can and has suddenly decided it is clawing the shit out of me without warning, and without fail the owner acts like that's just their cats personality, or just a "cat" thing.
I've never had a dog react in such a way unprovoked. Sure, I've met asshole dogs, and they warn me not to go near them immediately. But I've never had a dog wander up to me, insist on pets, and then all of a sudden bite me.
I like animals that try to tell me how they're feeling, rather than flip with no warning, and I feel the same way about people.
I can see the logic behind the mistaken correlation between narcissts and cat haters. Cats are known to be independant animals, unlike many other pets that praise you unconditionally just because you provide the food. They don't feed a stereotypical narcissists desire. But it's a gross oversimplification of both human-animal relationships and diagnosible narcissism to suggest that there's any real correlation between the two based on that.