That doesn't mean that every bird or squirrel killed by a cat was unable to reproduce and raise healthy offspring. Given that we are already facing falling pop

That doesn't mean that every bird or squirrel killed by a cat was unable to reproduce and raise healthy offspring. Given that we are already facing falling population and widespread extinction of just about every category of animal, and native ecosystems the world over are under threat from invasives of some kind, maybe we shouldn't be adding pressure to that. I'm sympathetic, I grew up with outdoor cats and they clearly enjoy roaming free, but is that worth it?