All 3 of my cats are indoor only cats. Since I live in a condo, they have to stay indoors. I also think that this is much safer for them. They seem to love being indoors so I don't feel bad about not letting them outdoors. Pepper is declawed in the front so he'll always be inside. Storm was abandoned by his former owner and was brought in to the Humane Society by a neighbor so I think that he has bad memories associated with the outdoors. Sunny and his siblings were found in a wood pile without their mother. He was raised indoors so he doesn't miss the outdoors at all.