I do feel that this song could be streched and interpreted to be talking about suicide, but I don't believe that was the original intended meaning. Rather, I think that this song is talking about the struggles that we each face daily as we go through life, and how, although we reach points when "all our hope is gone," we should carry on, or "move along." If you watch the video, it clearly illustrates this, by showing depressing and difficult situtions that we face in our daily lives, such as a rocky relationship, lonliness, a monotonous job, legal problems, and family troubles. While some people who were depressed to begin with might believe that this song delves into the realm of commiting suicide, I simply don't feel this to be true. I think it's meant more as an encouraging ballad myself, essentially saying that it doesn't matter how rough things get, you just have to keep on going.