Well, another thing to keep in mind is that indoor kitties will live for 18-20 years, while the typical life span of an outdoor cat is 3-4 years. Also, my kitties would think it cruel to be put outdoors anyway. After all, indoors is where all the food, sleeping places, etc. are. And my oldest cat currently, at over six years old, would probably be terrified if put outdoors. They have windows to look out, and cat trees to lounge on. They have all the advantages of being able to look outside, without any of the hazards, and I don't have to worry about them bringing in fleas. A few of the reasons why we keep our kitties inside are:
1. When we get home from work, we want my kitties there to greet us, be in one piece and clean.
2. I adopted them because I love them, not to let them run around wild outside.
3. Where we live, there are coyotes, raccoons, large owls, other wild cats, etc
4. I don't want the outside coming inside my place.
5. There are people who kill cats they can catch, brats who grab any kitty that doesn't run away from them, dogs kill cats, people speed up to try to hit one, and now with the dog fighting rings any lonely cat is looked at as training bait for the pit bulls if they can be caught.
No, thank you, I don't want my kitties to go through that misery. And incidentally the males are neutered and the female spayed, and they are all microchipped just in case.
tink