Gospel of John: Jesus is the Light of Life

Darkness makes life difficult, but Jesus is the light of life. We would not attempt to drive a car in the dark without headlights, we would not cut the grass in the darkness of night and we would not even look for our socks without turning on the light. John illustrates for us that Jesus is the light of life and it begs the question, why try to live life in the dark when Jesus is the light of life?