I don't know if it's "abused". I home schooled my son from 5th grade-8th, then he did 9th grade at regular school because he thought he wanted to go back, turns out he didn't so 10th-12th he did the American Home school program, which worked out really well. My daughter has been homeschooling for three years now but now that we are not jw's she wants the hs experience so she will start next year and I totally encourage it and can't wait.
IMO, it's for some kids and it's not. BUT the big issue that I have with home school is that most of the parents I know don't take it serious enough to give there kids a proper education. THAT bothers me a lot. And jw's who home school seem to do it all for the wrong reasons like keeping their kids away from "the world" or for them to be fully groomed for missionary, bethel or pioneering. I don't like that.
On the other hand, grade school and hs are pretty easy to study well and get through with a decent education. To me the important stuff is after hs, like college or community college. I always encouraged my kids to do their best at school but the fun stuff is when you get to go to college for something you really like. I was a great homeschooling parent. Taught my kids everything I was suppose to when I did the curriculum. Fortunately my daughter does a private school at home with the curriculum furnished which is good for me because to do it right is hard work!
IF I could do it over though, having said all of that, I would have wanted my kids to go to public school even if it were private. They need the experience and kids their age and they need to be exposed to the real world. My son especially suffers socially. And they really do end up getting a better education. Just my two cents..........wf