My parents have indoor/outdoor kitties. They also live in the middle of four fields, with a dirt road out front. Hardly any traffic. None of our kitties have ever been hit. RB cats Misty and Pookie lived to be 19 and 16, respectively.

I think my mom and dad are an exception. We did have an unaltered male that ran away for four years, came back wild, and was euthanized. (four years-undoubtedly the SAME CAT!)

I suggest setting up a leash and harness outside, then they get the enjoyment w/o the dangers. This is what my aunt does.

We occasionally let our kitties out in our back yard with us.