The higher the IQ the less likely you are to have friends. You have little in common. Few can understand your point of view. Even fewer have a knowledge base to even begin to understand your point of view. Additionally, higher IQs tend to find happiness in thought within. IMHO, tend to be intraverts. Regardless, this all results in social isolation and frequently a lack of bonding with others. Alone even in a sea of people. This fuels or even drives antisocial behaviors. Ultimately resulting in various mental issues.