My boys are indoor kitties and very happy to be so! You can leave the door wide open and they just look at it and don't step a foot outside. Ming is scared of the outdoors and Mac was abandoned on the streets for awhile by his former so-called owners, so he KNOWS how good inside is. If I could make them a special enclosure to play in outdoors I would, but I live in an apartment and that is not possible. They are very happy and healthy and that is what counts.