At the very beginning of the series, Bruce Wayne quits the superhero business. Why does he do so? He was forced to violate his vow to never use a gun.. In the very first scene of the show, we see an aged Bruce Wayne fighting crime as usual. However, when a villain gets the drop on him, he's forced into using a gun to save his own life...something he vowed never to do. As a result, he decides to give up crimefighting.