If you've killed for us, then we hired a hitman. Does that not make us liable?
Good question. Just think of it as me performing any number of services that are necessary but that you don't want to do. When i am at work and i'm about to push the big red button (it's not actually red), i imagine everyone i care about and people like faust and roger in my position wearing my uniform, covered in blood. Their tears flowing from guilt, or some other pain. After they cycle through my mind one by one, lastly, it's me. I press the button. The blood that was on me and my hands flows away like water and it is done, and all those people never had to go through all the pain I imagine a person like that would feel.
So... At what point do you think about the flouride they're putting in the water, and what that does to the Purity of your Essence?