I also scored far on the left and I'm doing okay in life. You don't need to be evil to get shit done. Just get shit done.
Would you take a punch if someone you hated took two punches?
Would you go to hell if you could ensure your rivals ended up there with you?
Jesus. Who goes through life collecting people they hate this much? Maybe I've been lucky but I don't have any rivals that I'd want to see with anything more serious than a papercut or mild social embarrassment.
The sad part of the story is people often cognitive dissonance themselves about the bad they do in the world, or make it abstract because most people don't like to be the bad guy of their personal story and might score as being a fairly light person, even if they do harm.