Cats, unlike dogs, have no loyalty to their humans whatsoever. They're totally prepared to pack up and go somewhere else, without a backward glance, if they see something/somewhere that they like better. I've provided feline utopia for all of mine and, for the most part they've stayed with me but one, in particular, just upped and left and decided that the house a few doors down was a better option. I tried hauling her back, keeping her in, giving her treats when she did come in and even paid ££s for a Feliway plug in from the vets to make her feel calm and secure at home. All to no avail; she divorced me! Out of over 30+ cats, over the years, she was the only one who buggered off. I have found over the years that femail cats are less affectionate and loyal than tom cats.