Each body has its own way of shutting down due to illness or injury. In a natural death, your breathing will simply slow until it stops. That is out of our control. Eventually all of our bodies will wear down to nothing more than ashes and dust. But American culture struggles with accepting mortality. We don’t like to age; we don’t like ugly. Unfortunately, neither idealizing nor ignoring death will make it go away.
Somewhere along the line, I developed this theory that all jokes are simply little brushes with death. Man walks down the street whistling, slips on a banana peel and falls. He’s strolling along, ‘I wonder where you get a good sandwich around here’ and smack! He finds himself face to face with his mortality; bruising tailbone, and ego, alike.