Music is energy and energy fuels a story. Whether that energy is soft and soothing or quick and action packed, music can always be that final component that you need in order to take your piece to the next level.
Story telling through editing is a funny but rewarding enigma. Sometimes you have every shot and piece of audio that you need at the click of the finger. Then other times you have to scavenge the abyss of the lost footage to find that perfect shot that could take your piece over the top.