Sorry, but I disagree. I'm an animal lover and have had cats for the last 20 years, also two dogs.
Cats are the only animal that kill just for the fun of it...they do not need to eat the chipmunks or rodents to survive and rarely do.
They are causing destruction of the wildlife. Some people (neighbors) may just enjoy having nature at their door in the form of birds and chipmunks, etc.
Why allow your cats to kill other animals?
I have read that one typical house cat that is allowed outdoors is responsible for killing 150 small animals each year.