i didnt read any of the replies so iŽll only state my opinion here
afterlife just means that you passed onto a different level of existence.a higher one.not one of 3rd like in this one where you were led to believe that you are your personality. or brain or whatever. you are not your brain.
even people in coma continue to exist,and its known that many who have awakened from coma states say they have heard everything around them.and even see everything around it.
but as i believe in reincarnation and many other things for me is only natural that an afterlife exists....not me nor even death exists in the way you think about it. for me death is an akakening to the real deal. and this what you re living now....only the experience is true.the rest is an illusion.
so....for me, before we actually encarnate we are already existing. on a different and higher plane. we make the decision to come here again to experience certain themes in life,and only then after we make our 1st breath,we forget all that was behind.all our past lifes..but the memories are in the sub-concious and can easily be acesssed by ones who know.
and then its all a cycle. you come and you go several times till your process of evolution is finished and you become one with God again forever.
but hey

again...this is just my perspective.