What if I want to create a system that lies, cheats, decieves, and undermines its users? What if it provides power but makes them puppets in the process? What if I want to utilize the concept of a system that gives its users curses and disabilities? What if the system peers into psyches and exploits their inner weaknesses for control? What if I don't want my protagonist to be immediately overpowered? What if the problems refuse to go away and keep getting worse? What if my protagonist gets abused, pushed around, beaten, killed, revived, dismembered, seperated from any comfort, and put in situations where options and even agency are limited? What if a character's origin world problems mocked them mercilessly in the new world? What if the strongest people behaved like idiots and the system gave them every chance to do so? What if the system mercilessly punished any hint of disobediance to its whims? What if I want to do something like that? What if every nightmare mode dificulty dungeon I've ever read has been easy mode in disguise and I just wanted to initiate an actual nightmare mode system for once?