There are tons of genres you could have contributed your talents. For some reason, you ended up writing crime fiction. Not fantasy. Not techno-thriller. Not cyberpunk. You wound up writing/reading crime fiction. What was the trigger? Why do you write what you write?
For me, it was a fascination with the raw intensity committing a crime brought. As a crime reporter, my favorite stories were the atrocities everyday people committed. The forces that transformed a benign person into a criminal peaked my interest. That transformation makes for a terrific backdrop for a novel, one that drew me to explore. The fact it could happen to me or someone I know makes it all the more dangerous and appealing.