Again, I'm not saying its wrong or right because it's not for us to say. Robin Wiliams was brilliant ... beyond brilliant ... he exuded that brilliance. And we laughed when he "went off" like a comedic bomb on stage, no one knowing really where he would end up and loving every minute but I wonder about the voices that were inside, if the outside voices were so loud. And no one knows that more than the bearer.
The most brilliant genius artists of our world were borderline - what they portrayed on the outside was not what they heard on the inside. A sensitive person (because to be that kind of an artist, you need a certain deep sensitivity) can try and drown those voices with drugs and alcohol, but drugs and alcohol wear off, and prescribed meds make you feel really okay after a while so you stop taking them ... and at the end, you are left with - yes, yourself.
And yes, we all want our troubled friends and family members to reach out when they are this troubled, but the most inner thoughts will stay inner.
Some will survive and move past and some will not.
I mourn Robin Williams. And I hope he finds the right souls path. I wish him peace.