"Evolution and Atheism are both theories......."
Don't read into it too much, as I am an Agnostic myself. All I meant is that Atheism means that part of your beliefs of the origin of the universe and life is that you do not believe in any God, and since it can't be proven, isn't that a theory?
And the only reason I say I'm Agnostic and not Atheist is for this reason. If I cannot disprove God, there's a "chance" there is one, of some kind, and therefore I am Agnostic.