The concept of an afterlife is inhumane and immoral. Belief in the continuation of your "soul" or consciousness after death is wishful thinking. Belief in an afterlife devalues the one life that actually exists: this one.
It's time to declare war on Christmas yet again. For 2008, there is a cool site called Why Believe in a God? And you can donate to an advertisement campaign that puts atheist ads on busses! I'm down, are you?