Many people don't fear a hell after this life and that's because hell is on this earth, in this life. In this life there are many forms of hell that people walk through, sometimes for a day, sometimes...
I am merely an insignificant creature on a microscopic blue dot in the vastness of space.
The sense of alienation that inspires wonder, awe and fear in us is enough of a proof that life does not belong to the planet Earth.