Shanxi came from a Vietnam vet who already was overloaded with kitties... he was such a compassionate man. I'm hoping she makes it to 22 - 24 like our family cat did (24). Our house is 2,000 square feet, we have window perches, sliding glass doors they can look out of, lots of quiet corners with pillows, and tons of cat towers. One of these days we want to build tunnels and walkways by the ceiling.
Seven are indoors unless I am supervising, Fluffy lives outside all the time in his little cat house, and Colette is allowed in and out. I already lost two precious boys to cars over the years, and never want to repeat that trauma. Fluffy has to be outside because he came from an abusive home, adopted us, but still sprays if he comes in even though he's neutered.