Well that is an obvious answer. Just because you keep your pet indoors doesn't mean you can't get out with them daily. I walk my dog daily. He enjoys it.
Typical. ya still didn't answer the question. Ya ever tried to walk a cat on a leash? They don't like it much. As a matter fact, it's worse than locking them up indoors permanently!
My mama kitty routinely crosses the highway out front! I've watched her do it! She watches both ways, and will not cross if there is so much as the faint noise of a vehicle off in the distance!
She then scampers across like her tail is on fire when it's clear! Comes back the same way.
My dogs won't even go near the highway! I taught them when they were young it was frikkin' dangerous and they accepted it! The cat, no way! She has a mind of her own!
She's the only cat that crosses. The other two would rather not take the chance, I guess.
Survival counts on many things in life! If intelligence is passed on, it's better for the whole of the species! I for one, will not interfere! Seems to work just fine that way! Oh, BTW, I had her fixed after her first litter. Another thing I take seriously.
I find it hard to deny my animals the experience of having off spring, but once is enough. Around here, a good farm cat is in demand, so we had no trouble givin' them away to our neighbors.
No way I'm goin' to lock a cat up! No if's and's or but's! It's cruelty IMHO!
ETA:
Another thing, if your dog could talk, he/she would probably ask ya to take her/him out somewhere and leave the leash at home so they could be free for a few minutes!