For me it was the solution to loneliness. I was never so happy as I am now with roommates. I used to think I prefer to live alone, not really anymore. Of course that is anecdote, but IMHO it helps some groups of people.
I don't live in a healthcare system where any of this matters. I live in a universal healthcare (insurance) country. I can go to any hospital and any doctor "for free" at any time. I don't care about their other doctors in the slightest, I have my list of trustable doctors and where they work based on personal merit. I always pre-check my doctors on the internet before I visit them. I don't even know the names of the hospitals I visit, to be honest (often it's just town name anyways). However most often the hospital nearest to me is the one I visit because the standard of care is good enough - now I will go a little (2 km) further to visit this one. I wouldn't go more than 5 km out of my way to visit a doctor (obvious exceptions apply).
It's not. There is a commercial for a hospital next to my house. On it is a photo of one of their best doctors (very well known and respected), saying "I work for this hospital because they enable my success". 100% honest. I wouldn't know he works at that hospital without that commercial and would never visit him without it. I am thankful.
My point was more that the people are also highly distracted by people around them who are also constantly distracted and thus buzzing, usually because of social media. The only solution is to go away, but then you're not seen in a good light.