Dissatisfaction is a feeling experienced when we expect anger.
Dissatisfaction is an emotion derived from expecting to feel anger.
Dissatisfaction is also called discontent.
Dissatisfaction is an emotion in which a person's intellect predicts something that causes anger.
Dissatisfaction occurs in situations in which we cannot avoid suppressing our anger. As a result, a dissatisfied person gives off a nervous energy which causes those around the person to start avoiding that person. The person's actions are strained, and they are tense both mentally and physically because dissatisfaction is not pleasant.
This type of body that is tensed for fight or flight has no value because there is no object of anger. The mental excitement is also useless because it is used to make a quick decision. Dissatisfaction has little value in evolution. The only positive effect of dissatisfaction is that it encourages preparation to avoid it because it is unpleasant. We can also say dissatisfaction is a side effect of intellect.