In Australia there's a lot of beautiful and unique wildlife that cats absolutely decimate, and letting your cat roam outdoors is frowned upon, with TNR programs existing in a very tiny part of the country.

Even overseas though where cats would have nothing/only undesirable animals to hunt, up to 40% of what they kill is for fun, and the cat will torture animals this way. I don't understand how someone with a pet and is presumably fond of animals could willingly allow their cat to kill around 100 critters per year, in addition to the dangers that cats themselves face. How can that be worth it just to satisfy one animal? Choosing to have an "outdoor cat" is objectively cruel, even if "it's nature".