You aren't even sticking with your initial argument anymore. http://en.m.wikipedia.org/wiki/Moving_the_goalposts It's our "right" to kill other animals? "We rule the earth"? How can people believe this nonsense? You don't rule the earth. You were, by total luck, born into your species, race, gender and community. And you think that this luck, which you can take no responsibility for, entitles you to kill and eat other animals at leisure. Animals that were, by the same token of chance, born into their species. How utterly, deplorably arrogant. "Prey without their predators does more harm than good"? How do these statements even seem sensible to you? Firstly, we are not the natural predators of cows, pigs, chickens and lambs. You made a patently false and unsupported claim. Provide a source to back it up. Secondly, these are not animals we simply pluck out of the wild -- we breed them in specialized farms. They have no effect on the ecosystem whatsoever (except for the greenhouse gas emissions, which obviously doesn't work in your favour).