Richard Carrier's Book "Why I am Not a Christian" is Excellent!

Carrier's book can be found here,which I highly recommend. Here's a brief summary of it: Carrier gives four reasons as summarized by Confessions of a Doubting Thomas:

God is Silent: that is, if God is as most Christians describe him, he should be able to make his message clear to everybody. And what's more he should be willing to make his message clear to everybody. The reality is, however, that most people are not aware of a clear message from God, and the message that seems to be heard by believers is not a consistent or even a non-contradictory one. Different believers get different messages and these conflict, and these lead (quite literally) to conflict. God appears to be unable to deliver a simple message to his people, let alone to everyone else. Thus, the Christian God is refuted by his silence. God is Inert: that is, there is no evidence that there is a loving and supremely powerful God at work in the world. Innocent children suffer and die. Good people suffer and die. Innocent children of good Christian people suffer and die. God apparently does nothing to stop this. This is inconsistent with the claimed character of the Christian God, thus, God is refuted by his inactivity. Wrong Evidence: basically, extraordinary claims need extraordinary evidence, and the biblical evidence is barely even mundane. The best evidence for the death and resurrection of Jesus is four non-eyewitness accounts, which contradict each other on important issues, and a bunch of letters, ostensibly from someone who never met Jesus in the flesh and only had a vision of him. And all these were written a couple of decades after the alleged events, at the earliest. How is all that sufficient evidence for the greatest claim ever made? Wrong Universe: the Christian claim is that God made the universe and put us, the pinnacle of creation, into it. So why is 99.99999% of all creation hostile to us? As far as we can tell, if you scaled the entire universe down to the equivalent size of a house, then the tiny zone which is capable of sustaining human life is as small as a single proton! Invisibly and insignificantly small. This is not what we would expect if the universe was intelligently designed for us, but is exactly what you would expect if we are merely an accidental by-product of a chaotic universe. Carrier goes into some interesting stuff about current cosmological theories which I can't summarise here, but his case is very compelling. He also contrasts the ancient view of the universe, as assumed by the New Testament writers and which is consistent with the theory of God, with the current scientific view of the universe, which is not. Fascinating stuff, and justified in the conclusion that the Christian view of God is false.