The reason to refute Bible or Koran or any other religious scriptures can't be the defacto reason to refuse the existence of God.
Evolution - natural selection theory did lead to so many materialistic / atheist idealogies. If ur atheism based on the above theory or/and big bang theory, etc u might be committing a mistake. Theories too evolve.
If u don't agree with the concept of God as depicted by religions u still could find out the truth, if u r interested, without outright rejection of God's existence. Cuz either God is oversimplified or made aweful & fearful by religions - intentionally or lack of words to describe.
Search the God with heart not with gathered knowledge alone. God does not seem to care about our intelligence , our defintions of Him. Faith & knowledge have their own reasons and limitations.
Firstly.... who said i was an atheist? That's a wild assumption to make. I think you draw that assumption on the basis i ask questions and search for answers instead of just accepting whatever i can think of. It's amazing how many people confuse me as being an atheist.
However your last paragraph seems to be more 'trust in god' speech which is hardly an answer to anything. Search with my heart? Well, regardless of what my heart finds does that make something absolute fact? No, it does not.
If you want to subscribe me to something, or brand me a 'type of person' you can label me as a 'Non-Knowerist'. I, just like everyone else do not know the absolute truth to everything. As such i do not subscribe to any one thing like the majority seem to do. I ask questions and look for answers wherever they may be, and whatever outcome might arise. I do not put all my eggs in one basket so to speak.
As a simpletons analogy: We are all wandering in a woodland area. Most people grab every egg in sight and throw it all in one basket and go home. I like to leave the eggs scattered so i can analyse and find out what they actually are instead of just assuming my own righteousness.
As another thought.... Many people, like the Visitor, think they can wrap up 300 million years of the evolutionary process by reading a badly translated story. I'm sorry but because some guy said: Adam and Eve ate an apple doesn't make it fact. From historical findings we can accurately show that genesis and so much of the bible comes from earlier sumerian writings. Adam comes from the 'created from earth and dust...' Earth/dust in Sumerian is Adama. But all that aside there are still no answers. We can't just wrap it all up and say it was created because a book says so, because darwin says so or because it 'feels' right. It may seem immensely awesome with our little understanding but why must it be creation? The only fact is we do not know. Thus you are all welcome to join me as a 'Non-Knowerist'. We like to search for truth, not just assume we have it after the first step.