I did not mean to imply that I no longer believe in reincarnation, or that reincarnation or life has no purpose or meaning. What I meant to say was the idea of souls planning car accidents, life threatening diseases, murders etc from the afterlife is something I find highly questionable for many reasons.
I think where the problem arises for the idea of learning lessons (and this applies for religions as well with the idea of karma in Hinduism and Buddhism and Sin in Christianity) is basically that many people project human attributes onto the afterlife, duality in other words.
People assume that because we must learn in a linear fashion during life here such as going to school and university the same must be so in the afterlife and that there is a progression of learning from one life to the next.
However, the afterlife is not a state of duality like earth, it is a point of singularity that contains everything, and anything can be experienced just by focusing on it, I can have the first person experience of somebody else's past life in the afterlife as well as re-experiencing my own. So if my soul needed to experience what it was like to starve to death as part of an important "lesson" (hypothetically) it would not be necessary for me to come to earth and create that experience from scratch as I would be able to access that experience somebody else had created and learn from it, thus no need to come to earth and create that experience a new. Like I said, I think it comes from projecting human attributes onto the afterlife.
Here, if I want to experience being a world class tennis player, I would have to practice tennis for many years to create that experience myself as well as the linear process of training to reach that experience of a world class tennis player. In the afterlife I can have the first person experience of living somebody else's life, such as a world class tennis player.
Newton presents the theory that souls do not have sufficient understanding, compassion, knowledge and therefore have to spend many incarnations collecting the right knowledge as part of their soul's growth, whereas in reality, in the afterlife everything is known at once and all knowledge, information and experience is available to everyone, thus no need to come to earth and learn lessons.
Anyway, that's the basic reason of why I no longer believe in what Michael Newton has to say. I am sure this will confuse some people and I will have to provide further explanations, but that's okay. I have spend years researching NDEs and communicating with NDErs which is how I realized that what Newton has to say doesn't make that much sense.