This point assumes a naïve and Disney-like conception of nature. Hunting and fishing are natural activities - many other species in the wild kill and eat each other. If fear, stress, exhaustion and pain are natural parts of the cycle of life then why should there be any particular duty on us to prevent them?  We, like other animals, prefer our own- our own family, the “pack” that we happen to run with, and the larger communities constructed on the smaller ones, of which the largest is the ‘nation-state’.  Suppose a dog menaced a human infant and the only way to prevent the dog from biting the infant was to inflict severe pain on the dog – more pain, in fact, than the bite would inflict on the infant. Any normal person would say that it would be monstrous to spare the dog, even though to do so would be to minimise the sum of pain in the world. We should respect this instinctive moral reaction. [1]  [1] See the arguments of Richard A. Posner from 'Animal Rights debate between Peter Singer &amp; Richard Posner'.