Empathy is good because you understand people. Psychopaths may have empathy which often makes them good manipulators but they lack sympathy so they don’t feel with others. That’s my understanding.
https://www.healthyplace.com/personality-disorders/psychopat...
https://en.m.wikipedia.org/wiki/Psychopathy
https://en.m.wikipedia.org/wiki/Antisocial_personality_disor...