Even Darwim's theory does not exclude the existence of God, because for something to evolve it must exist in the first place to evolve. So what created that original version? Science has no definitive answer. Theories are just that theories, that must be proven or disproved. Once proven they no longer remain theories. Both of these theories remain theories, that fall extremely short of creating a definitive answer.
Science has been unable to disprove there is or isn't a God, but then science has failed to provide scientific explanation on many mysteries that occur as to how they occur.
If you can be so convinced that their isn't a God, only proves that you yourself have never looked for God as a personal endeavor. Perhaps you should take that journey, as it is a journey we must all take as individuals.
Oh I looked. I believed. Then I saw god refuse to help the murdered toddlers, the millions killed by dictators, and I stopped believing.