Many species rely on groups or numbers for protection.
In our hostile environment those whose offspring are slow to mature are greatly disadvantaged, man is one of these. We are forced to form groups and like all groups leaders emerge. With leadership comes power and with it a form of order. We can clearly record the positive advantages of group forming, however we are apparently not aware of the disadvantages. Perhaps in the lesser intelligent species it is not an issue but in the creative Homo Sapien the negative issues of group influence are quick to manifest.