I dislike cats because the vast majority of their owners let them roam free, killing native wildlife.
So from my experience in my country, cats are attractive to irresponsible people who show disinterest in protecting the environment around them and want a pet they don't need to maintain much.
There are of course many cat owners who keeps their cats indoors or in cat runs and I have no qualms with them, they're great pet owners - but they're a tiny minority of cat owners.