A person's ability to accept an unfair trade is closely linked to their level of empathy; individuals with higher empathy are more inclined to accept unequal distributions. Typically, people default to a 50-50 split when negotiating, demonstrating that those who are kinder are more likely to agree to an unfair arrangement. Furthermore, serotonin levels play a crucial role in this dynamic, as increased serotonin enhances empathy. Thus, contentment and happiness can lead to greater kindness and acceptance in interactions with others.