What kind of future citizens are being created as a result of home schooling?

I have a friend who, when recounting tales of having been confronted with socially awkward individuals, then says, “Jeesh, what is her problem? Was she home schooled or what?”

I have read some of the advantages of home schooling and understand that some parents allow their children to socialize, albeit with selected individuals only. I also understand that parents home school for a wide variety of reasons. I have met some less-than-bright parents who home school and I have concerns for the education their children might be receiving.

What are the potential long term effects on society when parents with strong “values” send their home schooled children out into the world (e.g., to college, to the workplace, etc.)? I want to hear thoughts about the potential outcomes of contemporary society (not about historic times when home schooling was the norm rather than the exception). What happens when home schooled children who are raised in a protected world have to face the real world?