Just a theory but I think this.
There is a Heaven and Hell, based on Christianity except I think that Heaven and Hell is a different dimension of Earth. As Hell is on the bottom, and Heaven is on top and Earth is in the middle.
Heaven - A good version of Earth. (Peace, Happiness, etc)
Hell - The bad version of Earth. (Murder, Rape, etc)
Earth itself - Mixed. (Peace, Happiness, Murder, Rape, etc)