I just don't get it, even if you actually find a cat that is loyal like a dog, note that I write "like a dog", because there isn't a single cat on the plant that would be loyal **more** than a dog. most cats are like small dogs, they might bark but they won't be able to do much. plus they are to gentle to hug strongly, and they might scratch or bait you for so many reasons. you could put your hand inside a dog's mouth and try to force shut it and he won't let you.
if you don't have time for a pet, or you need a very gentle pet, then sure.. cat is the right friend for life (15 years tops) for you. otherwise you would be mentally insane not to pick a Dog..