Creationism

I am stepping on to one of my well ridden hobby horses. Blogging is the modern equivalent of a soap box and I like standing on mine and holding forth on whichever subjects I choose. 
This time it is Creationism. I watched a programme on BBC 3, where 5 UK and Ireland young people were taken to the States, specifically California, in order to try to open their minds to the possibilities that  God did not create the world as depicted in the Bible or Koran (there was a token Muslim). The USA was naturally chosen as it is the home of the Creationist movement and a large proportion of it's population believe in the Bible as it is written. I am not going to write a critique of the documentary  if you want to see I am sure it is on BBC Iplayer, Conspiracy Road Trip, Creationism.

The presenter who believed in God (I think?) but not in the Bible as a literal document was trying to open the minds of the 5 by getting them to talk to scientists, not all of whom were Atheists and at lest accept the possibility, that the scientific evidence cannot and does not support this view.

In the case of four of them he failed to even make a dent, one lady whilst not shaken in her a faith did at least except that more research was needed. There was an Irish guy about thirtyish, who was so intransigent in his belief it was scary. I felt it stemmed from an insecurity in his own stance but that was just an impression that I got.
I am, as stated before on this site, an Atheist. I have always been one since an early age, though I was unable to articulate it until I got older. I have always instinctively felt there is something intrinsically wrong with a religious belief. I appreciate that it is a faith and therefore by definition, one could argue does not need to be proven but it is this very inability to prove there is a supreme being who lives, I do not know where and is omnipresent and all knowing, that makes me certain, any such being cannot exist. 

I understand the desperate need that humans ( I was going to say human intelligence but I wonder!) have, that there is some purpose for our existence but for me logic dictates that we are just another creature on the earth among the plethora of species and life forms, we are born, we live a time span and then we die, simple as that.  Why do we believe that we are so special? So unique that a all seeing creator is responsible for us being on Earth? I am sure if the Earth had a voice it would postulate the opinion that the human race is a pest which is slowly killing the hand that feeds it! Indeed in my humble view that is exactly what we are here for. We are the biggest most aggressive pest the world has ever had and I suspect in order to safeguard its future nature needs to eradicate us!  We are pretty good at attempting to do this to ourselves and we probably would self-destruct, if we did not proliferate at such an alarming rate.

Why are humans so arrogant, why is it, that we assume we are the crowning achievement of evolution? After all evolution is by definition, on going, who knows what the future holds?
I am an evolutionist ( if you had not gathered by now) and cannot fathom why when there is irrefutable scientific evidence, this science is not accepted by everyone. And yet a vast majority of the world have a belief in one form or another in a story written by men whose wrote stories centuries before we were born, it is every bit as fictional as any work made up by today's authors. We don't believe some of the more reasonable stories that are written today, to entertain or provoke debate and yet millions believe various religious writings that are far more far fetched and in many ways, downright impossible.

As in the programme, the answer always comes down to well its God and therefore he or she can do whatever they like! I am tempted to say that is one of the most stupid answer to any criticism I have heard, it certainly does not lend it itself to any form of open debate.
I finish with this question, why is so much of humanity indoctrinated with the idea that there must be something after life and why are we so scared it might be nothing?