I would consider school to be an environment too artificial to learn good social skills. Home schooling shouldn't mean being isolated- ideally it means more realistic interactions with others.

I'm not the most social person myself, despite (because?) having gone to school, and neither is my wife. I'm sure there's many factors other than traditional school vs. not.

When you're an adult you are better equipped to deal with bad things in the real world. Your experiences as a child have an impact on that.

We were part of a local homeschooling group for many years and have seen many children go through it and are still in touch with those families. Haven't really seen the negative results you're describing. I feel there's a big difference between home schooling in the context of a supportive community vs. being isolated and there's also a big differences between various approaches to homeschooling, distance learning, unschooling and more. It's hard to say much without more data.