In your puny universe, a very young Bruce Wayne witnessed his father, and especially his mother get shot down by a hoodlum, by the name of Joe Chill in Gotham City’s Crime Alley. On that fateful day, a boy also died, and a vengeful man was born, and he would become The Batman.
While his intentions were true, he inadvertently turned the city he’d sworn to protect more dangerous. The presence of The Batman inspired nutcases to come out of the woodworks to commit outrageous crimes just to become famous. Being a criminal in Gotham was not much different than being a contestant on The Voice or American Idol. But this is your asinine reality.