But less life will probably have to die in order to sate you if you're a vegan, if you add up the food that the livestock would have to eat (most of the calorie

But less life will probably have to die in order to sate you if you're a vegan, if you add up the food that the livestock would have to eat (most of the calories that a herbivore animal will eat will not be translated into calories for the animal that is going to eat that herbivore; last I saw only 10% of the calories consumed carries over to the next animal). Unless the livestock is grass-fed or something... I don't think anyone is that concerned with the life of grass.