One: Some people think that sin is everywhere, including within themselves. And they scrupulously spend most of their time beating themselves up over it.
Two: Other people, the very people in society that should concern themselves with morality, don't want to think about the issue, and point to whether their heinous actions are legal or not. And of course, they also have the power to see that their actions, however heinous from a moral stand point, are totally legal. So we saw the legalization of imprisoning and killing people of Jewish descent in Nazi Germany, and currently here in the USA, of totally ripping off the wealth owned by Middle Incomed and Lower Incomed, while placing it all in service of themselves and their friends.
If the world had more people that fell right in between these two categories, we would all be better off.