i had 2 indoor/outdoor cat brothers growing up. 1 disappeared when he was about 5, but the other lived till he was almost 18. now my dad has 3 cats, 1 only indoor by her choice, and 2 that were strays, so they won't stand to be indoor only. plus 6 strays they are friends with that live in the garage and the mudroom
One of my FB friends is an avid "herper" -- someone who likes reptiles. He's always posting information to take down myths about the dangers of snakes and lizards and making mention of how much more dangerous cats are for their environment. I have 2 cats I keep indoors all the time...but I live in NYC and that's easier for me to say.