I think it's an injustice for cats to be left roaming free outside. I feel the same way with my dog as I do with any pet I may have...I would never let me dog roam the neighborhood, nor would I let a cat. I think it's fine for cats to be outside with there is somebody watching them/on a harness/in a safe enclosure. There are just too many dangers for any pet to be freely roaming outside. If I am ever able to get cats, they would be indoor only.