This is a topic I've grown curious about recently. Other people's food choices seem to generate so much defensiveness and antagonism in us. What we eat is about so much more than fuel and nutrition. It defines us as a group. Like the clothes we wear, the words we say, the language we speak, our entertainment. So when someone tries to break away from that it's like you're wearing your jeans around your knees and you just got a bunch of tattoos and piercings. You thought you were just selecting different food, but everyone acts like you're making a statement, like you're trying to break away.