Tonight I’m thinking about Chris Cornell and Chester Bennington. We were all still trying to regain our equilibrium after Cornell’s suicide in May, when last week’s news about Bennington knocked us down again. These artists, whom we so loved and admired, were burdened with an anguish so relentless that they chose the ultimate release. It’s unbearably sad, especially for their families. And because of their celebrity, it puts a pronounced and sobering light on the illness of depression and its devastating impact. Nobody is immune,…