dan76 said:
he takes a path that the audience would also choose.
I think that's what Lucas was trying to do though. He wanted to portray a decent person who made reasonable choices that turned out to be the wrong ones. That's why he was still tinkering with Anakin's fall after shooting finished. It went from ideological/ethical reasons (Anakin thought the Jedi were evil) to personal ones (he wanted to save Padme); Lucas wasn't sure how to sell the idea to the audience. Unfortunately, what he settled on didn't really work, and the PT didn't pull this story off.