The idea that there is someone out there who is ultimately responsible for this is one which feels deeply comforting.
The idea that there is some external authority that you can cite to rationalize what you have done to others is a tool of incredible perceived value.
The idea that there is some fundamental rule of what is Right and Wrong means that your inability to understand what's going on is much less important.
The idea that there exists an objective Normal that is defined by someone who has final authority?
It's a way to trigger the endogenous opioid system: you are Right, and that provides Comfort.