There are lots of definitions of hell. Most religions don't even think such a thing exists (in terms of eternal torment), and I certainly don't. But, many do, and those who do can't seem to agree on what exactly constitutes hell.
My mom thinks that hell is existing, but not being with her god, and knowing that you aren't with that god. No torment, just longing ... for what? Wishing I could spend eternity worshipping something so immoral? I can't get that. The last thing I'd want is to spend eternity with that, sucking up to its ego, thanking it for its atrocities.
We have people like PeaceBlessing, who (from what I can tell - please correct me if I'm wrong) think hell is non-existence. No torment, no nothing. We don't get eternal life; we're just gone. And I haven't seen any threats there. That idea of hell works for me. It's what happens to all of us anyway, and it's the same as heaven. We die, we cease to exist. Why is that a scary thought?
But, our merely ceasing to exist isn't enough for some. We have the fire and brimstone people. REPENT or DIE! There is a fiery lake and all of us non-Christians, who are 2/3 of the people in the entire world today (not to mention those who aren't "true" Christians according to the fanatics), will burn while the fanatics take great pleasure in our burning. You can actually see them drooling, when they can't convert everyone who isn't like them. We'll get ours, and that will show us!
Is the land Hades rules truly hell, or is it something else? There are lots of nuances there.
What about Valhalla? What happened to the non-warriors and the women? If the warriors fought all day and then drank and @!$%#ed all night, wasn't that hell for the women who had to spend eternity servicing them? What happened to the guys who helped feed the warriors and didn't fight?
What happens to the women in the Muslim heaven, not only the virgins who get raped each night, but the moral women who can only attain heaven through their husbands? I see nothing but human projection.