Shocked to learn he's gone, but, sad to say, I'm amazed Robin Williams lasted this long. Maybe he missed his late mentor, Jonathan Winters, who carved a permissive path for him, first through talented madness, and then death. Jonathan stuck around a long time, too, considering the uphill battle he waged against his own mind.
At a certain stage, the impossibility of a refuge in compulsivity becomes clearer to aging bodies. For Robin Williams, a soured sitcom deal, and for Jonathan Williams the loss of a loyal, life-long wife, perhaps became the death knells that youth and mass adulation no longer could counter.