No, I am not endorsing immoral behaviour. I believe it is important to understand the boundary between liberty and license.
As a writer, we must have the liberty to embrace the darkness and empathize with even the most nefarious characters. The Nolan Brother’s Joker in The Dark Knight and Shakespeare’s Iago in Othello are testament to this. While it’s never about admiration for their deeds, the authors’ fondness for these characters is evident.
One of the greatest ways to become a better writer is to explore topics deemed unspeakable in polite society. Assume your audience’s sophistication and be prepared for the criticism of those who fail to grasp your intent. Being a writer means embracing the unvarnished truth and surrendering to it in your storytelling. It’ll take your writing to a different level.