"How do you get enough protein?" "How can you even LIVE without bacon?" "How can you afford to eat all of that bougie plant-based stuff?" These are just a sample of the questions every vegan must endure over his or her lifetime. But now, thanks to a special rapid-fire rebuttal session featuring Russell Simmons, who recently published "The Happy Vegan," and the Atlantic's James Hamblin, there's an answer to even the most needling inquiries.