What patient/patients have left the biggest impression on you re: just being so sadly unfair? Probably lots of them, but just thought it might be interesting... :)
One of mine was an 8 y/o kid who had been w/her family in the military. She had had flu-like symptoms, and was taken to the doc. He said yeah- flu...keep an eye on her, rest, etc. The kid got worse. Then unresponsive. The family took her to the ER on base, where it was found she had a blood sugar >800mg/dl. Her brain was caramelized. She never completely woke up (as of when I went to work elsewhere, about 3 months after she got to us). She could whimper and move the little finger on her right hand. A whole life gone, but still technically there. It was so sad.
There were a lot at that facility that were memorable, even 25 years later. I sometimes wonder what they would have been like if they'd never ended up with head injuries/brain damage.