Not only is OP about a GRRM fan doing exactly that, but GRRM is not an experiment in grey morality, a concept that's existed for centuries, is a test of patience where you're expected to treat every genocidal egomaniac as sympathetic cause his mom beat him as a kid.
Tolkien is filled with grey morality characters but he understood a reason for evil for not an excuse for it. That he shouldn't spend massive swathes of his books trying to get you to feel sympathetic for the greatest evil in the land.