You contradict yourself by saying “they all can be wrong” and then proceed to give an explination to death. Which is just another explination. Death logically cannot be part of nature we as humans were not created that way and even if you’re an atheist you can’t deny the fact that mankind has never stopped finding a cure for death. We’re always comming up with new surgeries to look younger, reconstruct cells etc. Thus it’s not natural for us to die. Especially when it comes to the fact that losing someone is in fact the worse pain a human can possibly feel. Emotions. Emotions cannot be formed by atoms or chemical reactions there’s just absolutely no way for the complexity of humans and nature alone to be a coincidence let alone the emotions we feel. To say that we are nothing but atoms is absurd once again.