Searcher, even atheists would agree that our dying has to do with the genetic package we received and pass on.
Trying to tap into the reasoning in the "original sin" story, my question is, since Adam's sin is cancelled by his demise, why are we affected by his now non-existing, wiped-out sin? His real sin for us was to have offspring before he died? while he was imperfect, waiting to pay the price? Life is expensive, you pay for it with your death? and: you can wipe out sin, but even if you did, not the consequences?