Another factor may be in the matter of free will both on earth and throughout the rest of the universe.
Umm... it's a pretty large universe out there, Buz. Our planet makes up maybe 0.0001% of our solar system, which makes up maybe 0.0000000001% of our galaxy, which makes up maybe 0.0000000001% of what universe we can currently detect. D'ya really, really think that this electron in an atom in a protein in a hair on the tail wags that whole dog? That seems a pretty arrogant position to take to me.
And my preacher dad always said Gehenna was the Jerusalem city dump, not a lake of fire. The lake is only in Revelations, no? And Gehenna in a gospel somewhere?