Are you living somewhere abnormally dangerous? You are far more likely to use it when it isn’t needed. It’s the worse bet for most people and if you can’t understand that then your fear is blinding you. This is like someone with OCD saying it’s better to wash their hands constantly “just in case”. Sure maybe you don’t wash your hands for the 20th time one day and catch ebola, but more likely you just destroy your hands over time.