Hey Pandas, What Is Your Biggest Fear, And Has It Happened To You?

My biggest fear isn't exactly a phobia but it is just something I'm terrified of happening to me. I have a fear of watching someone commit suicide. Just the thought of watching someone end their life in front of me makes me shiver. I do not like thinking about it at all but its such a serious topic that just sits in the back of my mind and I think about it when I'm trying to sleep...