I suspect this has more to do with your social circle, which given the density of homeschoolers is probably either hyper-religious, doomsday preppers or some other dysfunctional subculture, and I'm not surprised those children would grow up to hate their parents.

To be fair though, I'd imagine an hour or two a week of socialization is still quite insufficient. On the flip side, 10+ hours a day of socialization is unquestionably unnecessary, and forcing your kids to become conformists or get beat up/bullied/etc (which is the reality in public schools unless you live in a really rich neighborhood) in order to get a little more socialization time isn't a good tradeoff. There are a lot of non-school activities children can engage in to get peer socialization where the type of bullshit that occurs in public school doesn't fly, due to the adults that run those activities losing customers and having their livelihood threatened if they let kids be little cunts, unlike public schools.