People have been filtering into perdition not only since the time of Christ, but since before the Step Pyramid of Djoser, and even before the Flood. I won't speculate how many years that might be, but h.sapiens is thought by some to have achieved full behavioral modernity something like 50,000 years ago. (There's new findings suggesting that human existence goes as far back as 150-300,000 years) Anyway; whether that extends clear on back to Adam and Eve I have no clue; but just think: if it does, then Cain and others from his era have been down in the netherworld all this time.
It's difficult for the human mind to appreciate 50,000 years let alone 300,000. I've been on the Earth for just 75, and I've noticed that my childhood is so far in the past to me now as to seem more like a fantasy than a memory. But you know; when you're talking about eternity, 50,000 years isn't even a drop in the bucket. If it were a drop in the bucket, it would be a bucket with no bottom; which is roughly akin to the futility of a gnat attempting to drink up the Atlantic ocean.
But just think: time stands still in hell: it's for the now; it's an existence. People who arrived there yesterday didn't begin doing time in jail like Martha Stewart expecting to get out some day; nor is perdition a temporary tour of duty like shipping out to Afghanistan. No, people in hell are in it as perpetual residents; they're in a rut.
They go year, after year, after year, after year, with no relief from the discomfort: no vacations, no recreation, no reading materials, and no hobbies-- there's absolutely nothing to do but reminisce. The mental atrophy, and the boredom that must result from that kind of mindless existence is beyond estimation.
In life, everybody enjoys God's blessings; even the really bad people. We're all breathing fresh air, basking in sunshine, drinking cool water, savoring tasty foods, listening to birds chirp, star gazing at night, throwing snow balls at each other in winter, river rafting, fishing, snow skiing, tending gardens, pruning shrubs, greeting friends during the holidays, spending days with grandkids; and all that sort of thing. In the Bible's hell, there are no blessings of any kind at all: only perpetual sadness, vexation, despair, and want.
In hell's unruly society; it's reasonable to expect quarrels, bickering, hard feelings, vendettas, rivalry, selfishness, insensitivity, irritation, aggravation, and ugly words exchanged between people. Is there really any good reason to be courteous and/or respect your fellow man's human rights in the Bible's hell; or to be kind, forgiving, affable, genial, courteous, cordial, charitable, altruistic, tolerant, generous, and patient? I was once discussing the netherworld with a co-worker and he remarked: "Hell won't be so bad; I'll have plenty of friends down there". Yes, he probably will have lots of friends in hell; but I really don't think he should count on them being friendly.
And the din: think of the volume of noise down there with all the wailing and sobbing, and the moaning, shrieking, yelping, howling, gnashing teeth, and the constant complaining. I can only imagine how annoying it must be in hell with its thousands and millions of people making all that kind of racket.
But just imagine bringing with you a craving for tobacco with none available. Or longing for a cocktail with no liquor in sight. A desire for music, with no way to produce it. A skill for writing, with no pen and paper. Yearning for a walk out in nature, with no world to do it in.
People in hell will never again smell a sea breeze, sit in the shade of a tree, take deep breaths of mountain-fresh air, play at sports, hear a bird chirp, see a sunset, watch a lunar eclipse, jog in the park, strum a guitar, enjoy a Christmas dinner with loved ones; nor make little pigs of themselves gobbling barbecued spare ribs and corn on the 4th of July.
Sports and recreation are gone: no more World Series, no more Super Bowl, no more Olympics, no more Las Vegas, no more Indian casinos, no more lottery, no more Lego World, no more Sea World, no more NASCAR, no more golf, no more surfing, et al.
No baths, no showers, no sleep, no TV, no radio, no iPods, no computers, no Twitter, no texting, no FaceBook, no Instagram, no YouTube, no MySpace, no internet, no clean sheets, no breakfast, no lunch, and no dinner. No snacks, no gum, no candy, no flowers, no parks, no rivers, no snow, no seasons, no picnics, no malls, no fast food, no trades, no careers, no trendy fashions, no jewelry, no cosmetics, no concerts, no operas, and no hobbies; absolutely nothing of this world that brings people the pleasures and the satisfactions of just being alive.
Hmm, what could a sadistic entity do to top "eternal misery" of the like you describe? Make things even more unbearable? But hey, if a "loving" one does it?
I could stamp on a whole load of insects and be cruel to life forms all over the place if I wanted to. I don't.