I do this same thing. All too readily I will share my history. I think part of it is insecurity.....kind of like...let me go on and put this out there so if you think I'm weird then at least I won't lose a friend because we're not friends yet. I have had a truly bizarre life. Even my t and my pdoc cannot believe how much one person has had to endure, along with a group of diagnoses. With so much trauma in my history, it seems some part of it is always in my mind.