In the case of greed and extortion you can say that the fear of not feeling good or fear of neglect is the motivation.
Depression:
Greedy hog: I don't want to mop up the mess from this leaky ceiling anymore. This house is falling apart. I better get rich!!!
neglect:
Greedy hog: I don't want to live in the gutter and I don't want my family to think i'm a loser. I better get rich!!!!
"Try to think of one example of an evil act which isn't instigated by fear. I sure can't..."
Greed is NOT motivated by fear, and neither is extortion.
You're reaching.
And rape is motivated by hate, not fear.
Nice try at dancing to the side, but this isn't disco.