I'm really not. The is in this particular thread is what "literally the entirety of the natural world" thinks is "food". The ought is whether we should "think

I'm really not. The is in this particular thread is what "literally the entirety of the natural world" thinks is "food". The ought is whether we should "think" likewise, or use our purported rationality to consider the implications of that behavior. The "naturalistic fallacy" — normally used to deride people we like to think, rightly or otherwise, are less rational than ourselves — is, literally, "if it's natural, it must be good/right/proper." The notion under discussion is exactly that. It's not about whether or not we should all be vegetarians; it's about fallacious "arguments" that we shouldn't.