Hell is neither exothermic nor endothermic
because it does not exist physically.
Hell is a state of being, existing in eternity
an ever present now.
Souls are spiritual and have no mass.
Hell is that state of being of a soul post-life,
that is not in the presence of God, its creator.
Aware that it is not, and never will be,
as a result of its own choice not to be while alive.
It is the horrifying awareness of the ultimate failure
that is entirely one's own fault.
It is a state of desperation and the most profound and
forlorn loneliness that will never end.