We Are The gods: Immortality

From the earliest times, throughout different cultures across the world, and right up to our present time people have believed in life after death. Even atheists who say they don't believe in life after death are often caught at the funerals of loved ones speaking about the deceased as if they are still in existence. 

We hate death. We want our loved ones to stay and never die. Some have tried to create a resurrection opportunity through technology: Cryogenics. Once again we see how humans are trying to play gods by exploring the option of freezing dead humans with the hope of resurrecting them someday when the technology allows. 

Why do we have this desire for immortality? Why don't animals have the same desire? There is a simple explanation in the words of the wisest king that has ever lived.