He wasn't using "right and wrong" as factuals, but as morally right and wrong - and in that sense, he's right. There's no definitive morals - morals change based on an individual's values.
Certain animals eat meat because that's what they have to do to survive. We don't have to. That's fact. Animals that do eat meat kill for survival: whether that's protection or for food. We don't have to kill animals. That's also a fact.
Now, you say we are "different" from animals. How does that difference justify the unnecessary death of millions of animals?
Anyway, as I've already said, I eat meat. I don't look down on vegetarians nor do I consider myself high-and-mighty. I value animal life, but I just don't care enough not to eat meat. Just like I don't like pollution, but I drive my car. I don't like a wasting natual resources, but I'll leave the TV on while I'm on the computer. I just don't care enough to change my lifestyle.
However, Redneck, the difference between you and me is that I recognize and accept my depravity, while you try and justify it.