I agree with a lot of your points, however, outdoor cats are really bad for local wildlife, so from a purely utilitarian standpoint there’s less animal suffering by keeping them inside. And they’re not slaves, we don’t force them into labor under penalty of death. You could argue for prisoners i suppose.

We fostered some feral kittens and I was worrying about the same stuff, restricting freedom and such, and then there was a big storm w hail and I went down to check on the kittens and they were cozy as hell.

There’s more to it than just deprivation. One of ours is the baby of a feral momma but our lil girl has never seen a hard day in her life, no outside, no shelters. And seeing how much personality she has just melts my heart.