Is it normal to be obsessed with murder cases?

I have been watching Cold Case Files, American Justice, 48 Hours Mystery, Dateline, Criminal Minds, Law and Order for years. I am also always interested in the news and what's happening in the world, even if it's bad. I've read real crime stories (which include every detail), and find them interesting. I always discuss these cases and current events with people and my mom thinks I have become obsessive with murder cases and child abuse cases etc. After all these years of this, I actually have become paranoid and terrified of getting abducted or murdered or tortured or some random creep breaking into my house and chopping me up. I have literally scared myself from years of this, but I keep reading the stories and being interested and scaring myself. Like Albert Fish scares the crap out of me, and all the stories on Cold Case Files have convinced me it's easy to just get murdered. Why am I obsessed with reading this stuff and am I too paranoid?