I have actually received a few responses to the challenge of July 19. The majority of these responses reminded me of one central issue. The reason I do what I do is not because the world is such a deserving place (a concept I will address further down), but because it is my nature to do it, and if I didn't I wouldn't be the same person.
This may or may not be true. I have spent an inordinate, perhaps unhealthy amount of time pondering my own nature as of late. If I do something that is utterly contrary to my nature, does that fundamentally change my nature? If I behave like someone else, do I start to become someone else? The question was raised once by a friend. He was contacted by a woman whom he had admired greatly when they were both in High School. At that time in their lives, she had no interest in him, as he was a quiet sort of boy and was not given to the sort of rowdy, boisterous, attention-garnish behaviour to which girls in his school seemed to be attracted. At this more mature stage in their lives, now that he was married and had a daughter, she had sought him out via email and appeared to have taken interest in him. He was somewhat tempted to see just where this would lead. After a discussion over a few beverages, we brought him to the following conclusion. The reason this woman had taken an interest in him, we surmised from the exchange of messages, was that she had matured to the point of disinterest in rowdy, boisterous, attention-garnish behaviour, and the men who behaved in such a manner were generally unfaithful and narcissistic. Should he decide to follow the path of infidelity, he would no longer be the kind of man she was now seeking, and would not only fail to keep her interest, but likely lose his family in the process.
As for whether or not the world is worth saving, I suppose I should clarify that I mean the people of the world. Are people, humanity as a collective, worthy of the expenditure of heroic efforts required to keep them from global warfare?
Check back with me in a few days. I have some thoughts on that, but I'm out of time now.