We have all been through terrible falls in our life. Hopefully none of them have been bad physical falls. Spiritually we have all taken horrific falls into a life of sin. Romans 3:23 says that "all have sinned and fall short of the glory of God." Our goal is to be with God, but our sin has caused us to fall and make us unable to reach that target. Since none of us are perfect, we have all taken the fall. Thankfully, when we become Christians, God brings us back up and saves us. This does not mean we will not fall again though.
As we think back to the story, why did Christian Booth fall? It is simply because he strayed off of the path he was hiking on. How many times we do ignore the danger and stray off the righteous path? Sometimes we get enticed by the world and wander out towards the edge. When we do this, we should also expect to fall. Straying off of the spiritual path never leads to good things. Let's always focus on staying safely on the spiritual path that leads to heaven. There is nothing worth seeing on the way up that is off the path.