Everyone has a moral code.
For far too many people, it’s a simple ‘do what benefits me alone’, but for people like us, blessed with powers and abilities far beyond those of ordinary humans, we must do better.
It’s not that we’re superior than ordinary humans, it’s that they cannot be as good as us, and thus we must be a beacon for them on how to act.
That means abiding by the law as much as we can, it means making sure villains get their day in court. And it certainly means not killing them.
Letting them die, though…