@Green Witch,
I think bells are cruel to the cat. They have acute hearing, and now have to listen to ting-a-ling-a-ling everytime they move a muscle.
My cats have always been indoor, but I won't say that I think it's insane or inhumane to put a leash on the cat. It depends on the animal.
I bought one of those harness type leashes once when we were moving, so Princess Jezzery Doo-Doo Head could stretch her legs at rest stops. We'd get it on her inside the car, then carry her to the grass and put her down. She was fine with that arrangement. She sniffed around, crouched, slunk and laid down. She didn't go to the bathroom, as that is what the litterbox on the back seat of the car was for, in her opinion.
Later, I thought Dr. Lulu Abromowitz could do with some exercise, so thought maybe we could walk up and down the drive way. This was a whole 'nother story.
She was distraught is the whole putting the harness on thing, and when I put her down on the driveway, in a panic she did the only thing she could think of. She fell over stiff legged on her side (whump) and laid there. I tugged lightly and she stared straight again. I tugged harder, ditto. By this time I was laughing pretty hard. Wally came out and we tried to entice her with food to at least move. No dice.
Finally (and I only did this because it was a harness, and not around her neck), I dragged her about 2 feet, during which she never moved a muscle on her own.
As soon as I took her back inside, she walked off like nothing happened.