What is the main conflict in The Omnivore's Dilemma: A Natural History of Four Meals by Michael Pollan?

The Omnivore's Dilemma, by Michael Pollan, is a book about American eating habits, and the food dilemma American's have today. Pollan tries to help readers decide the answer to the age-old question: "What's for dinner?" by examining the different food paths available to modern man and by analyzing those paths to determine the best for health, stability, and sustainability.