In 1962, the Food and Drug Administration approved the birth control pill. I would submit that that’s one of the four or five most transformative technological changes of the last millennium. Not just the last century. Because for the first time in the history of the world, half the people on Earth no longer have to depend on the other half for the arc of their lives.
The best justification we have for killing fifty-six, fifty-seven, whatever billion land animals and a trillion sea animals every year is that they taste good. And so, in a sense how is this any different from Michael Vick, who likes to sit around a pit watching dogs fight, or at least he used to?