People don't like that answer. I've actually had a friend of mine freak out at me because I explained something very similar, but on a personal level. The only reason anyone [normal, non high-profile] isn't dead is because no one has decided they need to die. Tell me, if someone decides you need killing but you don't know that, what's to stop them from walking up behind you with a garrote? Braining you with a rock? Using a large stick to beat you? Sharpening a stick with previously mentioned rock and impaling you? Or just wrapping their hands around your neck until you stop twitching? Absolutely nothing, and that's without getting into "modern" tools with metals, chemicals, and other force-enhancing tech. She didn't particularly like the idea that her existence depends entirely on the fragile sanity and civilized mindset of everyone else in her environment.
The sooner everyone realizes you can't completely control the risk without destroying your life anyway the sooner we can get on with living. Life involves risk, you can't prevent everything, and you will die eventually; learn to live so life means something in case you do expire earlier than expected!