ren

Because Kakashi really is a distillation of everything wrong about the shinobi system. trained from birth as a ninja, expected to kill at the age of 5, his father, a legendary shinobi, suicide baited by the village he served his whole life for actually adhering to their village's supposed mantra.

Then Minato and Hiruzen, the two men he trusted most in his life(because really, who does he have left?) shove him into black ops where he can kill his emotions and fade from his identity as a human and turn into a tool for use. Used by his teacher, used by his village, even used as a tool for suicide by his last remaining friend. for decades on end.