>Nephilim are a human/fall angel hybrid that are an abomination in the eyes of God.
How could anything other than freely chosen evil be an abomination in the eyes of God?
This isn't to discount the MANY stories/myths/writings/etc that depict things otherwise. They have their value. They are an inherent and ongoing part of civilization. I couldn't function without them. But perhaps they are meant to guide us towards deeper truths.