I do not think any of us are crazy, mental defect yes. You must remember that dissociating, splitting, creation of Alters was merely a survival technique.
This is why we,you,it,them are still here. You are correct it will be worse before it gets better. I'm still in the worse stage. I have an infant Alter that makes sounds that are like exhaling through your mouth and vibrating, trust me it's pretty embarrassing when this happens at work...