Again, lack of evidence is THE ONLY evidence of absence. There's no such thing as absolute certainty, only degrees. Simple example: I assert that there's a tomato on my desk. However, you can't see, smell, or touch anything resembling a tomato anywhere on my desk. Does that make it absolutely certain there's not? No. You could be dreaming, you could have missed a very tiny tomato, reality could all just be a dream, etc. However, you have NO REASON available to you to believe that my assertion is true, and therefore the only logical conclusion is to reject the positive assertion.

You're completely misrepresenting the secular position of evolution. It's not saying "God - if one exists - definitely didn't do anything." Merely - "there's no objective evidence available at hand to suggest that any supernatural powers aided in creating the diversity of life we see today." Which is the truth.

EDIT: in reply to bipper. It's also amusing to see you accusing someone of "deluding facts."