We are the last Ones to Die

We are among the last humans to truly die. Eventually, humans will learn how to measure and record the state of all matter and energy running though the human body. Once that happens, it will eventually be loaded into a computer simulation and the consciousness of that at the moment of measurement person will be fully available for study. 

Someone, anyone will be able to judge every thought, memory and event ever witnessed by the person. Imagine being able to speak with a long deceased relative. Imagine being able to see the honest memories of a mass murderer or a hero saving the world. This, done at a massive scale will become the information we currently see as lost due to death.

Our past self may be immortal already. If we can do it, it's quite possible that an alien race already has.