It is critical to realize that underlying the extermination of nature is the marginalization of human beings. If we are to save what is wild, what is irreparable and majestic in nature, then we will ironically have to turn to each other and take care of all the human beings here on Earth. There is no boundary that will protect an environment from a suffering humanity.
The vagaries of the industry and show business itself would not lead one to conclude a lengthy career - because things change. Popularities come and go. The tragedy of it is that somebody like Robin Williams should suffer from that, and be driven to commit suicide. If ever there was an untimely, unfair death, it was him.