Many souls need to stay in those lower dimensions, in that purgatory, as it’s called by humanity, because not all lives are created to transition immediately to the Light. After physical death, some souls choose to hold onto their feelings of anger, sadness or guilt due to the difficulties they had during life or their death circumstances. They do not find the Light, nor do they want to go into the Light when they do find it. Many of them end up in the lower dimensions of existence.