> There's no reason we couldn't change them back. I'm with you for the most part. I'm vegetarian myself, chiefly for environmental reasons. And certainly we co

> There's no reason we couldn't change them back. I'm with you for the most part. I'm vegetarian myself, chiefly for environmental reasons. And certainly we could change people's habits back, but there's an obvious reason this would be very hard: it's easy to give people something they want; it's hard to take it away. People feel loss more keenly than gain, so they will feel return to the status quo ante to be a greater loss in quality of life than leaving it was a gain.* And most people everywhere just aren't that pro-social. They want to eat meat. They don't particularly care about the well being of others or their future selves. I think this is malleable, but most people would prefer not to change their attitudes. I'm not sure what the solution is. * Also, we discount utility by distance. A gain one year ago or one year from now feels less important than the same gain today. And if we're talking about a gain felt by a previous generation, the utility drops down another notch. Someone else's imprisonment or freedom just doesn't matter as much to you as your own. Change is hard in part because you feel the pain now and the gain is sometime in the future.