Direct link to article... [littlegreenfootballs.com]
For atheists, Christmas is a religious sham. For if God does not exist, then obviously Jesus' birth cannot represent the incarnation of God in human history, which Christians celebrate at this time of year.However, most atheists, in my experience, have no good reasons for their disbelief. Rather they've learned to simply repeat the slogan, "There's no good evidence for God's existence!"
More: A Christmas Gift for Atheists -- Five Reasons Why God Exists
I won't go into the whole list, it's the standard speel they give. In each case it turns out that God is the best explanation for things that can be explained without invoking a deity.
It boils down to the basic "If you are an Atheist, then there is nothing but your own sense of right and wrong to keep you from killing and raping if that's what you want to do."
RBS