I'm an atheist. Why? Because there's no evidence to support the existence of God whatsoever, and most religions are illogical and defy all basic common sense, even for those without it.
PS. Obtaining the audiobook now.
"Only a fool says in his heart there is no God" (Psalm 14:1)
Romans 1:
20For ever since the creation of the world His invisible nature and attributes, that is, His eternal power and divinity, have been made intelligible and clearly discernible in and through the things that have been made (His handiworks). So [men] are without excuse [altogether without any defense or justification],(B)
21Because when they knew and recognized Him as God, they did not honor and glorify Him as God or give Him thanks. But instead they became futile and [c]godless in their thinking [with vain imaginings, foolish reasoning, and stupid speculations] and their senseless minds were darkened.
22Claiming to be wise, they became fools [professing to be smart, they made simpletons of themselves].
Read The Dawkins Delusion as well.