"God is the immutable will to all goodness." William Law
Every creature is born with God's will sewn into it to enable its highest happiness and greatest glory.
Lower creatures are set to an instinctual out-working of that will in them. Higher creatures that carry the God-like attribute to choose, must unite in agreement and continuity with that will as their earnest of union with their Source.
Sin entered when sons of God exerted an own will, separate and distinct from the will and intent of their birth nature.
Thus, man necessarily took to himself another nature incapable of experiencing the nourishment, sustenance and powers of his first birth.
The man is now constrained to derive and perpetuate his existence by what remains: his own perceptions and abilities - to rescue himself from the quicksand of his own making.
Far from being a punishment, it was the inescapable consequence of exercising the immense power of his will in contradiction to his birth.
So in the most accurate sense, hell and damnation are the consequence of man's choosing to be severed from his original life source.
It is entirely a matter of nature. Just like a branch cut off from a tree results in the death of that branch. The trunk of the tree is not angry with the branch.
Some say that God is mean because He sends people to hell for being bad.
Not at all! He's simply showing you what you cannot see.
A branch severed from a vine imagines it is 'free' to do as it wishes. To tell the branch that it's in a state of death beyond its own remedy, is simply the plain, unalterable truth.
If then, you are that severed branch, and the Tree of Life should come to you and offer to graft you again into oneness with its own nature, would this not be a most ineffable mercy?