I can't say I'm very afraid of anything that could happen to ME - In the sense I still feel that natural, survival-instinct fear of serious injury or death when I'm doing something inherently dangerous, but the idea of it doesn't cause me fear, and I haven't frozen up or freaked out in the few deadly situations I've found myself in.
On the other hand, I'm cripplingly afraid of people I love being hurt or killed. It's made me realize that I can live by my own principles as far as I myself am concerned, but when it comes to my girl, my siblings, my parents, friends or anyone else I love, I'd kill or die to save them if I needed to.