They keep them shut so they won't be driven mad by the knowledge of when people are going to die. * This leads to an interesting conclusion. Brock has always chased women all his life, in what may seem to be sheer desperation. With the Shinigami Eye theory, it becomes apparent that Brock is cursed, much like his past life of Miroku. Both have not chased women out of perverseness, but necessity. (At least of the thought that they need to continue their lineage). * Ichimaru Gin is the most obvious example. * Alternatively, these same people all possess Geasses, specifically the mind-reading type that Mao had. They keep their eyes shut for fear of their Geasses getting out of control and forcing them to hear everyone's thoughts until they go utterly batty. * Alternatively-alte