Because that would mean that every soul has learned all there is to learn and then there would be no more reason for any soul to incarnate again. https://medium.com/illumination-curated/life-is-school-for-the-soul-9b081dbe8453 Some souls are sent here to be wicked as penance for their previous screw ups. "When a soul so completely f**ks up its previous lifecycle its penance is to come back to earth for the sole purpose of living the entire lifecycle in agony. My father’s soul needed to live a throw-away life to pay whatever karmic debt he previously amassed, and I needed a torturer for this lifecycle’s lesson-plan, so we were a match made in heaven." https://medium.com/grab-a-slice/canceling-my-father-the-ultimate-expression-of-empathy-dbf390772d26