I was all for letting our cat be an indoor/outdoor cat. That was until her boundaries became further and further away as she explored. And one day she didn't come back. She has been gone for 3 months now, and it is heartbreaking not knowing where or what happened to her.
If I had to get another cat, which I don't think will happen for many years to come, it will be an indoor cat. The stress of not knowing how far or where she is wandering around, is too much. If she comes back, which I have heard could still happen
, I will only let her out on a leash.