I believe heaven,and hell are planet's extremely far away, where only the soul can travel. The earth,and its inhabitants where split in half, Giving the two sides a fair chance, since some one had to foul up in the begining, maybe adam,and eve. This is obviously an effective hypothesis, i mean, think about it. There is evil, yet there is good. Its all 50 50, in the end, everyone deserves what they get.