Religion can make it worse. Are you supposing that if people were encouraged to believe in a transcendent reality and to be encouraged by grand rituals and music and preaching to love their neighbors then they would put jealousy and frustration aside?
The envious die not once but as oft as the envied win applause.
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Obviously in dealing with a relationship sexuality has to be involved and jealousy and emotions like that. And I don't know I've always been intrigued by those emotions.