If you lived in a world where a DeathNote exists...would you become a God, or a coward?

You are standing alone outside, wondering if your friend is going to show up. You planned to go to the movies with him, and the movie starts in half an hour. You go and sit on a bench, feeling disapointment slipping in. Then, you see something on the grass ahead of you. A book. You pick it up, because you have nothing better to do, you think it's a diary, or because you're curious.