I was raised Catholic and I'm an Atheist. It's not that I didn't want to believe (it's nice to think that someone is watching over you and you can go somewhere nice when you die), but through research into Art and History, you can really see how Christian beliefs have evolved and it's pretty much a bunch of hooey to me.
That being said, the evolution of the concept of Hell and fire and brimstone is really been created by different people from different cultures in different time periods, which contributes to Satan have different names (Lucifer, the Devil, etc) and appearances (red man with satyr legs, dapper man, etc).
A place called Gehenna near Jerusalem, is considered the inspiration for Hell as we know it today since it was basically a giant trash dump. They would burn the trash and sometimes that place would burn for days or weeks with a horrible smell.
During the Renaissance, it was Dante who put order and definition to Hell with his Inferno portion of the Divine Comedy based on earlier depictions in art of the Last Judgement of Christ.
The was a pretty good documentary that came out recently (you can get it on Netflix) called the History of the Devil. It's rather short (only 50min), but it basically gives a general rundown of the Devil and Hell through the ages and how the ideas have evolved. I would recommend checking it out if you're interested.
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