"I am fed up with this guilt trippers."
They aren't trying to upset you, they're trying to motivate you, show you that it's possible, and get you excited to join them. If you feel guilty when you see others (like vegans) being happy and doing well, that might be a sign that you know what you're doing isn't right.
no, "happy" people don't make me feel that way. But unhappy ones who shove into my face that what I do is evil. And what they do is holy. Thats all.