Well, I'll have a go although my answer is going to be biased, so I will be interested to see what the other atheists think of this. Even as a believer, I haven't believed in 'life after death' or 'consciousness after death' for many years. So I am in harmony with atheists in this matter. I believe once you die, your life force leaves your body etc and that is the end of you. I can't comprehend any kind of consciousness existing after death because you need the 'receiver' or 'processor': the brain, and nerves etc in order to experience consciousness. The very idea that any kind of life or consciousness can continue is going into the realms of the supernatural. If were proven that life continues in some metaphysical way, then maybe God is out there somewhere as well.
"The eternal mystery of the world is its comprehensibility"
Albert Einstein
Albert Einstein