See I make a distinction between my ego, my memories, etc , and my stream of consciousness. I am quite convinced that upon death, my memories, ego and all functions that arose from my brain will no longer exist. However, I am not convinced that there is no feasible mechanism by which a body that I control will once again arise out of the universe. For example, imagine that we are in a deterministic cyclic universe (even though we probably are not). When I die, I am gone for good. However, eventually the universe will collapse into a singularity and then it will expand again. Since it is deterministic, the expansion will happen in the same way, and thus I will once again arise out of the universe. The nth time around I will be no less in control of my mind, body etc than any of the other cycles, however as time has essentially restarted there will be none of my previous memories or my previous ego established until time cycles to the point that the memories are formed etc. This is just one of many mechanisms I can see in which I could have life after death, I do not think that this mechanism is very likely but it is just an easy example.