Just because you don't believe in god doesn't mean you can't believe in some kind of existence after death. 
There are still many things about the world around us that we do not understand and possibly cannot comprehend. I certainly won't rule out the possibility of an existence after death. The difference is, I don't hold onto it as a hope of reward for myself and punishment for others.

There are still many things about the world around us that we do not understand and possibly cannot comprehend. I certainly won't rule out the possibility of an existence after death. The difference is, I don't hold onto it as a hope of reward for myself and punishment for others.