I've been making my way through Michael Pollan's wonderful book The Omnivore's Dilemma for the past month or so, and I've got to a point where I just don't see eye to eye with his opinion: vegetarianism.

Is the killing of other animals for our dietary preferences moral?  He makes the case that as moral beings, it is up to humans to treat animals as if they have as much of a right to life as any of us, and that since we are not nutritionally dependent on meat-eating, we should change our ways.