From where does hate come?

In the brain, hate originates from the medial frontal gyrus, premotor cortex, medial insula and the right putamen. Scientists refer to this as the hate circuit.

Scientists believe that hate is a feeling that provides an evolutionary advantage, as it provides feedback for a person to confront someone they do not like on the basis of these emotions.

Hatred also shares some of the same attributes as love. The areas where the insula and putamen are activated during feelings of love are also the same ones activated during hate. The main difference between the two feelings is that love tends not to trigger areas that are associated with judgement, while these stay activated when feeling hate.