Why is my cat refusing to use paper litter after being neutered?

Well, honey, your cat might be feeling a little sensitive down there after getting neutered, so they might be avoiding the paper litter because it's rough or uncomfortable on their healing bits. Try switching to a softer litter like sand or shredded paper to see if that helps. And if your feline friend still refuses to cooperate, maybe they're just being a diva - but hey, who can blame them?