Aha I like your style. I still believe that there's no such thing as objective morality. We may condone (or condemn in most cases) what someone else do based on an arbitrary moral framework (be it our legal system, our own moral compass, etc.), but that person may rightfully think that what he did was morally acceptable based on his own ethic principles. We are all independent beings, and as such, there's no "higher up" power or the likes to dictate us how to properly behave. We like to construct such artificial code of conduct, but that doesn't stop some members of our society to act differently while believing firmly that what they're doing is right.Nothing wrong with judging people by your standards, nothing wrong with having standards, also nothing wrong with ignoring other people who don't share your standards.
I mean, when I first heard of 4-20 I was doing research, turns out it was the birthday of this fellow Adolf Hitler. Very compelling eyes. Painter, sure, decorated war vet, that's good, involved in politics, could be OK but then hold on, he hated Jews, I mean really hated Jews, the more I learned the less I cared for this guy, so yeah I am going to judge him and his moral compass. To the point where I was wanting to find and kill Hitler till I found out he was already dead. I didn't even know he was sick.
---Adapted from a Norm MacDonald [RIP] bit
Also your last sentence implies there is no objective morality, and I am not referring to the moral laws of Lemmy, Chuck Norris and Morgan Freeman either. Basic logic and human decency tells us that what Paul Bernardo did is wrong, wrong as fuck.
The alternative is to believe that some individuals choose to act in a certain way out of pure evil, knowing very well that what they're doing is wrong. I'd rather have faith in humans, misguided some may be.