Is it normal to find shady guys, or men in masks really attractive?

I've always had a weird taste in men since probably primary school. Everyone around me knows I've always had this kinky side to me ever since my young mind had figured out the differences between males and females. I guess maybe because I'm an only girl and growing up with three brothers you seem to develop a bit faster as you notice the differences between the two sexes and growing up with guys I guess I picked up on that whole boys way of talking.
Ever since my later years in primary, I was known for whatever that came out of my mouth had either a double or maybe even triple meaning. (at least one of them being dirty) and I had a lot of guy friends for that reason. (okay I'm getting off topic here)

But what I've always wanted to know is where and why I got this weird attraction that started at my early-teens for dark, mysterious/shady men with masks. Is it normal?