Stop worrying. You are way more fragile than you think. That's why humanity created 7 billion people at the same time and around the world. Decentralization is important.
On the other hand, it is bad news for you. You can catch a naughty bacteria and die. You can slip by the door step and become paraplegic. If you are concerned about your family, get insurance. If you are concerned about your life (paraplegic or blind is not fun) then... tssk... bad luck. There is no insurance for that.
ps: I'm not suggesting you go do irresponsible things but worrying beyond reasonable yield no better results.
On the other hand, it is bad news for you. You can catch a naughty bacteria and die. You can slip by the door step and become paraplegic. If you are concerned about your family, get insurance. If you are concerned about your life (paraplegic or blind is not fun) then... tssk... bad luck. There is no insurance for that.
ps: I'm not suggesting you go do irresponsible things but worrying beyond reasonable yield no better results.