I have an indoor/outdoor cat that is spayed. It comes and goes with my dogs, and sometimes stays out for days at a time.
If it comes back, fine; if it stays out, runs away, gets ran over, gets hunted (in the suburbs..?), fine - that's why I didn't give it a collar.
I guess hunting them should be legal. People in Wisconsin can then eat cat, make cat-skin coats, and mount cat heads in their living rooms.
I'm not against hunting stray cats, but what are you going to do with all the dead cat carcasses?