You can be dead wrong, thoroughly wrong and completely wrong and still be able to justify and rationalize being wrong. There have always been consequences for making the "wrong" decision no matter how you defend it. Problem is, nobody wants to believe it until it's too late.
So, how do you feel now about your dietary choices over the years....? If one needs by-pass surgery seems like it could be nature's way of suggesting a person's eating habits may have been misguided---I think it's called "The Doctrine of Logical Consequences."
I think it makes sense to say we are made differently. It would be so boring if we all were made from the same identical mold.
However, some things are just stemming from basic human values. When someone obstructs those laws, then they are an anomaly or an aberration. So, if you happen to be a malignant narcissist, then you happen to be a law-breaking traitor to humanity as a rule.