It is time to stop debating theists. Theists are less intelligent and should be treated as such. We only serve to decrease their intelligence by trying to engage them in intelligent conversation.
Atheists should engage the doubters, the people sitting on the fence. The intelligent ones will see the truth. In time theists will be small in numbers, they will be the minority, but we must dismiss them.
For the last hold outs the truly deranged believers I submit that a new mental health disorder to be known as "Theistic Predisposition Disorder" be listed in the Diagnostic and Statistical Manual of Mental Disorders.
Three million years of human evolution has rendered the majority of humanity predisposed to theistic beliefs. These beliefs cloud the judgement of all afflicted. Political, social, military, economic, medical, scientific and a myriad of other important decisions are made based on a mental disorder. Decisions which effect the whole of humanity are made based on a belief of fairytales. Humanity itself is threatened by such horrific incompetence!
"Theistic Predisposition Disorder is a psychiatric diagnosis characterized by an irrational and pervasive belief in God(s) and/or belief in an afterlife."
Atheists must take action. Humanity cannot survive itself if it keeps bringing god along for the ride.