Were it announced tomorrow that anyone who fancied it might, without risk of reprisals or recriminations, stand at a fourth-storey window, dangle out of it a length of string with a meal (labelled "Free") on the end, wait till a chance passer-by took a bite and then, having entangled his cheek or gullet on a hook hidden in the food, haul him up to the fourth floor and there batter him to death with a knobkerrie, I do not think there would be many takers.
Most sane adults would, I imagine, sicken at the mere thought. Yet sane adults do the equivalent to fish every day: not in panic, sexual jealousy, ideological frenzy or even greed—many of our freshwater fish are virtually inedible, and not one of them constitutes a threat to the life, love or ideology of a human on the bank—but for amusement. Civilisation is not outraged at their behaviour. On the contrary: that a person's hobby is fishing is often read as a guarantee of his sterling and innocent character.
(Brigid Brophy, The Rights of Animals [London: The Animal Defence & Anti-Vivisection Society, 1965], 3 [first published on 10 October 1965 in the Sunday Times])