Not sure why you’re downvoted for that. I’m a meat eater, and I’ll admit veganism seems more ethical. But it’s too inconvenient to give up meat, so I don’t. And having vegans around reminds me that I could be doing more to make the world a better place. So guilt.
Probably helped by the fact that none of the vegans I know are preachy about it, so I can’t just assume they’re all assholes either.