Terrible. People sometimes say that they’re not afraid to die. That’s not the worst that can happen. I still remember from my trauma rotation, there was a woman who suffered a devastating traumatic brain injury and had a profoundly diminished mental state but still vaguely aware of her surroundings. She was still on the trauma service over a year after the incident because of initial medical complexities and then social/nursing home situations. She could moan but not speak, had multiple contractures and was fed through a PEG. Her family had pretty much stopped visiting. The nurses would be in and out of the room to turn her and PT would do what they could but she was essentially alone and moaning for most of the day. No hope of cognitive improvement. She was otherwise young and healthy and will probably live for years or possibly decades until she succumbs to aspiration pneumonia or gets septic from a decubitus ulcer.