Yeah, I think this is the big difference. We have the capacity to rationalize and introspect. If we can make a change for the better (and know we can), how do we justify not making it?
Sometimes the reason is “it’s hard” or an apathetic “it doesn’t matter”. But I think it’s very difficult to come to the conclusion that it’s (consumption of meat) the correct thing to do.
I say this as someone who commonly falls into the “it’s tough” bucket.
Sure, we’re animals. Being able to reason and rationalize sure are something too, though.