Those whom believe in a god, gods, or deity, are schizophrenic, incapable of distinguishing reality from fiction.  They are so enamored with their fiction, convincing them otherwise is impossible.  They are what I like to call weak willed and require someone telling them what is right or wrong, and having someone to worship or blame for the good and bad which occurs around them.  They often use fear and reward as intimidation or consequences for their actions and those around them, often citing the good go to some imaginary afterlife among angels or the bad damnation among demons.  They are usually very dangerous because of their delusion and relentless drive to recruit more members.  Take caution because these beings will war and possibly attempt to destroy any knowledge or persons contrary to their beliefs.  I wish there is a cure for this disease but unfortunately reason is not something they are capable of.  With billions loss to the mass hysteria the end of the human race is surely guaranteed.