I enjoyed that and some of his other books, but it was The God Delusion that did it for me. Having been born in a religious society makes it hard to break out of needing to assume there is a god, but that book could give people enough explanation to drop that assumption.
I always think it's really interesting how our upbringings shape us. I'd never even heard of god until I was 4, when I must have heard the word mentioned, asked my dad what it mean, and it was explained to me as a thing up in the sky that some people believe in.
