I was homeschooled and my son is homeschooled.

I disagree with your premise that homeschooling pushes kids out of group human contact. People who attend public school often assume that kids who attend homeschool literally sit at home all day...which is just not...real?

It was the predominant notion when I was a homeschooled kid 30 years ago, and for most of them there is no argument or evidence that will convince them otherwise.

State-run education is their orthodoxy, and anything that challenges that is tantamount to heresy.