Imagine the person you have been married to for over fifty years is close to leaving this world, staying in the hospital for the last days. Could you imagine to leave that person behind, alone during the last hours? Driving home with the car because you cannot stand the stress connected to your stay, the pressure? Would you tell that your family? Letting someone absolutely foreign watch over your most beloved?
I mean, who would do something like that? Leaving the one person you truly loved and knew for most of your life in the really 'hard' times, the worst, maybe. You promised to stay when it would come to those times, but nevertheless now you are leaving. You let pass the precious moments which you know could be the last.
It is incomprehensible for me, frankly speaking. If I were in that situation - all I would wish for were some last private, precious moments with that person. I would sit at his side, not even leaving to go to sleep, because I would be too afraid to miss his last breath. I would stay at his side until the last moment. And even longer.