Except for school I never went to any institution as a kid. No nursery, no kindergarten, no after school programs. Both my parents worked part time, so there was always an adult at home.
For most my life I felt sorry for the kids who had parents working 9-5 and having to be in institutions and getting institutionalized.
I was well into my 30s before my wife explained to me why I was wrong. She was studying for these kind of pedagogical jobs, and while following her education on the side line, it really turned on a light bulb in my head: I was wrong.
While the home-raised method might have worked decently when I was a kid when more people did it, it would absolutely not work today. Most of my own issues throughout childhood and later basically also comes from not socializing enough as a kid.
My own kids have been through the whole institution process because both my wife and I have had 9-5 jobs. Due to this, my kids are much better developed to tackle the world that they live in, and they have not lost any off the ability to think freely or anything that I previously believed was the negative effects of being raised in institutions.
Of course there are some institutions that are better than others, but overall, their personel are a lot better educated to handle it than someone who has no education on this and only believes in "what was good enough for me..."
Even today, I sometimes meet people who want to home school their kids and such. While that might be a good idea in certain cases, it's almost always done for the wrong reasons and without regard to how difficult it actually is if you want the best for your kid.
I think this is compounded by the fact that many of the social institutions that used to exist are also greatly reduced, and children are expected to be much more structured now than they were. Used to be that kids could reasonably be expected to walk to a library or playground on their own, or play with neighborhood children, without being constantly supervised. (And yes, bullying happened, and yes, so did the Atlanta Child Murders. But the former was a much more realistic problem than the latter.) Kids were also going with parents to church, parents probably had some kind of social outlet, etc. There was, in general, more community. (I'm not bemoaning the loss of religion, since I think religion is trash, but I do miss the community that religion helped build.)
And yeah, most people I know now that home school kids are doing it to ensure that their kids aren't exposed to 'dangerous' ideas.