"Despite what the clerics will tell you, staring into the Pit of Avernus is not actually traumatizing, but should still be taken as a dire warning. Devils and demons that dwell within are cruel and merciless, only thinking of themselves and how they may overpower their rivals. Making a deal with such a creature can lead to great wealth, but even I agree that the Pantheon does not suffer such mortals to walk their halls after death. The echoing screams I heard are testament to that."
-Excerpt from Beyond the Material: Volo's Guide to Extraplanars