As far as why I consider telling people I'm bipolar, I've noticed that I feel most comfortable around the people who know. Otherwise, I feel cautious and guarded around those who don't. I am concerned that people I'm "hiding" this from will notice my unusual, unpredictable behavior, and I guess I'd feel embarassed. So I find myself avoiding people, or keeping my emotional distance. Thanks for all the responses! They're helpful and thought provoking!