When you're vegetarian, there's a taboo about bringing it up because of reactions like this. I would hide it until necessary (like someone offering me meat to eat), and even then people would throw a fit. Either asking me why or telling me about all the reasons they personally had for eating meat. I didn't give a fuck I just didn't want your nugget. For what it's worth (and this is anecdotal) I've never met a vegan or vegetarian who just HAD to tell everyone. I have met plenty of omnivores who hassle vegetarians, though.