Canonically (according to the Year One miniseries), Bruce Wayne was twenty-five when he first began operating as Batman.
Oh well.
Dear gentle reader: this blog has been operating continuously since I was a teenager. The writing below is at least a decade old. In that time every molecule of my body has been replaced, along with many foolish ideas and flighty beliefs. I want to keep some of those things public out of an honesty and humility I owe the world. I trust you to carry that context with you.