Manhattan, written and directed by Woody Allen, is one of the great films in the history of American cinema. Its primary concern is the love affair between Isaac and Tracy, which runs into numerous obstacles, for a variety of reasons I won't bother to outline here, and appears, when we arrive at the scene below, doomed to fail.
The clip I've embedded is the famous scene near the end of the movie in which Isaac, confused by the emotional turmoil of his life, reclines on a couch and, speaking into a tape recorder, asks, "Why is life worth living?"
Consider the scene and his answer(s). Then I'd like you answer the same question, as if into your own microphone, in a comment below. Please model your response after Isaac's: Give your answer as a specific list, as he does, to what he correctly calls "a very good question."