I don't see why people are worried about there not being a life after death. You fall asleep every night and slip into unconsciousness without going into blind panic so why the concerned bout losing consciousness when you die? The only difference is that you don't regain consciousness.
You live you die, end of story.
The only evidence for "life after death" (and for that matter life before birth) is the fact that every atom in your body existed somewhere else in the universe before it came to be part of your body. Every atom in your body will continue to exist in the universe after you die which for me is far cooler than any man made afterlife story.