I have been an atheist since I was 15.  I am now 26, and have read the full range of standard atheist arguments.  The first one, which because it was first, probably had the most significant impact on me was George H. Smith's "Atheism: The Case Against God" which I purchased on Amazon along with Judith Hayes's "The Happy Heretic."  I remember reading both books while thinking every page or two, "…