Great advice from all. My cats also are indoor cats. they are, however harness trained and I have a small fenced yard that I take them into, under my supervision only, in good weather. In winter they don't go out at all, nor do they ask.

Up until 8 years ago my cats had always been strictly indoor. But there came a time when I was working about 70 hours a week just to survive. I had a little yard and loved puttering in the garden. But I had so little home time that, if I was puttering in my garden, I was taking time of myself away from my cats, so I put up a fence, trained them to harness, and now they come out with me, but only with me. I usually keep them out about an hour, and when I say its time to come in, then run to the door and stand in line waiting for me to take their harnesses off.

They never try to dash out, or ask to go out any other time.

As long as cats get plenty of stimulation and interaction from you, they are fine to be kept indoors. And safer and healthier.

A lot of sick people out there, just looking for cats to torture. Not to mention disease, predators and cars. But it's the sickos that scare me most.