Dude, why are you creating new scenarios to worry me?
Having said that, we all got to go sometime. Hopefully - I mean this sincerely - most or all of us still have many decades ahead of us. Nevertheless, I personally believe in making the most of every day I have, because I can't 100% rule out all possibility of a natural disaster, freak accident, violent crime, etc.
The good thing is that none of the really awful stuff happens 99.99% of the time. So, I should hope, that gives you some relief and comfort and helps you sleep better tonight.