My writing is a reflection of me, or someone I know well enough to step into their mind. I've never had a desire to write about horror, evil or depression, since I never think about those things.
I've read this guy's plays. Aside from them being poorly written, they are no worse than anything a horror movie fan would come up with. I'm sure the guys anti-social behavior came into play when the teacher decided to go to the campus police.
He didn't speak, rarely made eye contact and avoided contact with both students and teachers outside of what was required. He also took pictures of people without their permission. His teacher mentioned that he took them under the desk frequently. That is anti-social behavior as far as I can tell.
I guess it's a matter of being able to draw that line between fantasy and reality.
So, do your writings accurately reflect your beliefs and mental state?
Should people's character be judged on their writings?
The point is that a writer sits down to write something and goes outside of himself/herself to write the piece. If the same person who writes x-rated cards also writes very serious, solemn, religious cards--how would anyone know who that person really is in real life?
Maybe the person is a bit of both...
Out of mere curiosity, how and where did you manage to find his plays?
And this brings up another point. Actors and actresses are also called upon to portray killers, rapists, mentally unstable people even though they may be quite sane themselves. They're "pretending" to be something they're not just for the sake of the role. If they do it well and the audience hates the character they're portraying, we say that actor is very talented.
A talented writer can write about things beyond his or her own experience.