Men "thirst" for vengence, or at least are pleased to see it occur JustOneMinute: Now Ask Them About Coercive Interrogation: "On scans, both men and women seemed to feel the pain of partners they liked. But the real surprise came during scans when the subjects viewed the partners they disliked being shocked. 'When women saw the shock, they still had an empathetic response, even though it was reduced,' Dr. Stephan said. 'The men had none at all.'

Furthermore, researchers found that the brain's pleasure centers lit up in males when just punishment was meted out."

Men and women are different. Men seek Justice more than Mercy.