Souls choose to reject the love of God. I think it was C. S. Lewis who wrote that in the end we either say to God, “Thy will be done” or God says to us “Thy will be done” and we are cut off from the presence of God and the Light of Christ. The complete absence of God’s influence is something no mortal has ever experienced. Even the most heinous villains in history have been constantly surrounded by reminders of God: beauty, innocence, tenderness, birth, death, bravery, kindness, loyalty. Whatsoever entices us to do good comes from God. Remove that influence and He’ll is the natural result: a place filled with desperate, hateful predators who no longer have prey except each other, who hate all, trust none and can find no rest, satisfaction, peace, hope or allies where even their memories of goodness fade or are expunged. This is what they chose. This is what they get because they create it themselves.
You wrote:
The complete absence of God’s influence is something no mortal has ever experienced....Whatsoever entices us to do good comes from God. Remove that influence and He’ll is the natural result
You neglected to mention another aspect of God's ministry: the Holy Spirit's restraint of evil, which is removed in Hell because God grants their wish to be completely free of Him and His influence. But the larger point is that God still loves every Hell-dweller and wants the best for them. He doesn't want others torturing them--He wants their torment to be only what they've actually earned.
So He surrounds each person with fire, proportional to their well-demonstrated evil. Every time they lunge at their neighbors, which is often indeed, these flames agonize them, while the neighbors remain unscathed--meanwhile, the neighbors are lunging into their own flames. Hitler and Vlad the Impaler have massive conflagrations about them, while harmless Aunt Minnie has a little one. Eternally.