Nietzsche is the first one that said, okay now that God is dead, what are we going to do with our morals now? They have to be human created and not handed down by an other earthly realm.

The existentialist's wrestle with this question competing and conflicting each other. Many of their conclusions are awkward, sad or questionable. Nietzsche was the one to set the challenge. Nietzsche's re-evaluation is horribly disgusting though.