Adults tend to believe that intelligent kids can deal with anything because they are intellectually superior. This inevitably includes situations where the intelligent kids have neither knowledge nor skills to support their experience. They go through the tough times alone. Adults don't understand that they need help and other kids don't want to associate with kids the social leaders say are outsiders. 

As a result we have many highly intelligent people whose social development progresses much slower than that of most people and they have trouble coping with the stressors of life that present themselves to everyone. It should come as no surprise that the vast majority of prison inmates are socially and emotionally underdeveloped or maldeveloped and a larger than average percentage of them are more intelligent than the norm.

Western society provides the ideal incubator for social misfits and those with emotional coping problems. When it comes to happiness, people who are socially inept and who have trouble coping emotionally with the exigencies of life would not be among those you should expect to be happy.

High-school age adolescents with higher IQs and extremely low IQs were less likely to have had first intercourse than those with average to below average intelligence. (i.e. for males with IQs under 70, 63.3% were still virgins, for those with IQs between 70-90 only 50.2% were virgin, 58.6% were virgins with IQs between 90-110, and 70.3% with IQs over 110 were virgins)