I very much disagree with your point of view.
If you have authoritarian parents with narrow world views, being exposed to other ways of thinking/living in school will only raise your expectations and create resentment against the parents which will generally make things worse for you. And if you are a slacker (and the parents lets you slack) being in class isn't that useful. If you are smart enough you'll get by, doing nothing. But the moment you'll be required to actually put some effort the lack of work will show up and by then it will be too late. On the other hand you could get an early warning if you avoid the hard stuff being homeschooled and it's generally more effective when you figure out stuff yourself, not being spoon fed in a lecture.
And by being at home, time can at least be used for self-guided exploration that are likely to be more useful than whatever they decided to teach in the current era at school (outside of language/math/science later on it's all thinly disguised propaganda anyway). If you are focused on the same things as everyone else at the same time you are not actually building strength around your interests/characters, the only purpose is to make you fit a basic template so you can be "useful" in the labor market. The idea of public school is to make a tool out of you, before anything else.
What you are complaining about is having shitty parents, which is a problem with bad outcomes, regardless if you go to public school or not. And even if you are successful at public school, there is little chance those parents will pay for later studies, so you are mostly setting yourself up for disappointment. You might as well learn to figure out stuff on you own, because you'll need that skill more than anything else when it will be time to leave your shitty parents.
I understand the frustration that comes from the feeling of having "missed something" but I can assure you that unless you were leaving in a very good school district (aka rich, which doesn't seem the case) you really didn't miss anything. Most of the real learning is done outside of school, inside school is mostly endoctrinement.