I'm just not sure exactly who I'm writing to. Is it for closure or a final letter to my dying parents? Is it a memoir of my childhood or a tell all of family secrets that will explode like a bomb? How do I even tell a dramatic story that people would want to read? Again, what's the point? 

I think the point is to help you realize just how far you have come, out of the Borg.  I keep a journal and reread it at times just to prove to myself that things do happen to me and "I AM NOT CRAZY".