Mortal problems are for mortals to solve. So long as we allow autocrats to rule us violently, we will despair for a divine justice that never manifests.
We can detect the mechanisms by which our senses detect the outside world and processes that experience. And all evidence points to these mechanisms ceasing when we individually perish.
Hellish places exist, some of which we've experienced while living or probed in the reaches of our world.
But spirits have no mass, emit, reflect or absorb no light or particle, have no electromagnetic signature, make or absorb no sound. And we know this desperate to detect them, by searching the material differences between the living and the dead, and we have yet to detect a thing.
We imagine spirits such as human souls to function with capacity similar to the human brain, but without any of the qualities that allow such capabilities.
Henry Kissinger's story has ended. He does not languish in Hellfire nor soar through the heavens nor haunt his own house. There is no vengeance to be had from his countless victims. All that remains is what we learn from his life and history. Maybe we'll pursue a future in which people like Henry Kissinger do not attain wealth and power. Maybe it will take more monsters making atrocious arrangements with monsters before we take such action.
But Hell is a fantasy to distract us from the here and now, that ours is a world where Henry Kissingers can thrive.