It's no big deal and good on yer for sharing.

Personally, I'm neutral when it comes to Freddy Kuger.
We all have our obsessions. It's the one's that we, ourselves, find disturbing that we seek acceptance of...or at least I do.
You see, I am intrigued by real murder investigations, the ones they show late at night on TV. I especially like the one's where a psychic might be involved in solving. I could watch that sort of thing on TV for hours.
But, I always seem to find myself justifying my enjoyment of these programs to family and close friends with statements such as:
"Oh please don't be thinking I'm all disturbed...it's just so interesting to me because of the forensics work involved." or "I sometimes come across cases that got a lot of media coverage and they answer a lot of questions for me." or "I realise that you find it disturbing the way I enjoy these programs, but it's just that I find it intriguing how the murderer's twisted mind works."
...and I don't usually cop much flak over my obsession of real murder investigations either, so I don't really have to justify my enjoyment of such TV programs.

I understand how that feels. I am very insecure when it comes to liking things that are meant for children. I keep feeling like I need to be reassured that I'm not being childish for enjoying something that I'm outside the target demographic for. It doesn't help that my brother makes fun of me for it. But aside from him nobody else I know has a problem with it, so like you, I have no reason to keep trying to justify it.
But enjoying things with disturbing subject matter doesn't make me feel insecure. In fact, I relish seeing people squirm when I tell them about things like Repo! The Genetic Opera or Sweeney Todd.