Why do unpleasant emotions exist?
Anger is shown when we don't like something and are motivated to let it change.
Disgust exists so that it prevents us from touching things that could make us sick.
Guilt makes us more cooperative and generous to redeem for the mistakes we made
Jealousy can protect us as we signal to partners that we care about being with them
Frustration makes us perform better, it pushes us to get better results in something
Guilt is there to learn from our mistakes and it makes us a better planner
Fear makes us more attentive to details and enhances our overall senses
Sadness shows us what we find important in life and makes it less superficial