Hexmage-EN
Legend
Both D&D 5E and Pathfinder 2E use alignment as the basis for their entire cosmology (though Pathfinder 2E still has rules associated with alignment, unlike D&D 5E).
Without alignment, the Great Wheel and the Planescape setting have no foundation underpinning them.
I also greatly treasure how unique devils became in D&D and Pathfinder thanks to the Lawful Evil descriptor. They took "make a deal with the devil" extremely literally and developed entire meritocratic bureaucracies that are arguably more important to devils than their evil plans (one Forgotten Realms novel even has a daughter of Glasya and granddaughter of Asmodeus himself worrying over an imp underling filing what is essentially an HR complaint because it'll look bad on her record!).
Hells, with the Blood War (LE vs CE) D&D pretty much established devils as the greatest force for keeping demons from running amok while the forces of Good standby and watch lest they become corrupted (though presumably that frees up celestials to do acts of good rather than fight demons constantly).
Without alignment, the Great Wheel and the Planescape setting have no foundation underpinning them.
I also greatly treasure how unique devils became in D&D and Pathfinder thanks to the Lawful Evil descriptor. They took "make a deal with the devil" extremely literally and developed entire meritocratic bureaucracies that are arguably more important to devils than their evil plans (one Forgotten Realms novel even has a daughter of Glasya and granddaughter of Asmodeus himself worrying over an imp underling filing what is essentially an HR complaint because it'll look bad on her record!).
Hells, with the Blood War (LE vs CE) D&D pretty much established devils as the greatest force for keeping demons from running amok while the forces of Good standby and watch lest they become corrupted (though presumably that frees up celestials to do acts of good rather than fight demons constantly).