A Child Called It - Author Purpose

In this book, Dave Pelzer uses the "I" word a lot. I recently found out that his reasons and purpose for using these I statements was because he was trying to be the boy in the book. He went through a much similar situation with his mom so he wanted to say that he, "I", am a survivor. He also didn't want to leave the readers empty handed with no final happy ending, so he compared his survival with the survival of the boy. He wanted the book to also be noticed that it is said from the perspective of a child and how at only 4 years old, this nightmare started.