He loves his wife so much that he thinks he is doing...

He loves his wife so much that he thinks he is doing something to protect and save her, ... But what he's really doing is he's getting addicted to power. The more power he gets the more he wants and then once you do that, there's nothing left because you're willing to sacrifice everything. At the end of the day, Anakin sacrifices his family. He does fulfill his destiny after another 25 years and lets his son live and basically dies redeeming himself. But he goes through a lot of s--- and causes a lot of pain to people for a long time.