Hell and Heaven used to be clearly distinguished from one another, and they were both located far from where we now dwell. The only route there was through death. It was once believed that your style of life would judge and determine your fate.
As awareness and education increased, the next generation became aware of the atrocities committed by the previous generation in the name of religion, and the justifications offered in the name of heaven or hell. Younger generations started to establish both right on the land where we live, moving away from the unproven concepts of hell and heaven.