From a nursing point of view, I can see why you don't want family around all the time. As an ER nurse, I don't have that option. Our facility encourages family at the bedside and we even allow family in the room during codes. Now, we do ask that only parents stay in very stressful situations and when we're doing procedures, but the rest of the time, family can come and go. I know that sometimes this even bothers me a little.
I also have a personal issue with this. My grandmother died recently. She had a massive stroke and died two days later. Initially, she was in ICU before we signed the DNR. The staff was wonderful, they allowed us to stay with her the entire time. She was not conscious and she was on a vent, but I just couldn't leave her alone. We were very understanding when it came time for assessments and procedures, but I was always allowed to stay with her and for that I am eternally grateful. She was in ICU for 36 hours and I only left her bedside to go to the bathroom. I slept in a chair beside the bed. We were considerate and did not have the entire family at the bedside all the time. We also did not have anyone under 18 in the room ever. There were a couple of times we thought she was going to code and we were all in the room with her. I know for some of you this may really chap your a$$, but from a personal standpoint, the few hours I had left with her were precious. She was transferred out of ICU to hospice unit after we signed the DNR, where she died 12 hours later. I wrote letters to the staff of both units thanking them for all they did. I hope you keep this in mind next time you are herding family out of the room because "visiting hours" are over. These visiting hours mean nothing when your loved one is dying. You're not visiting, you're saying goodbye.