"It encourages development of social skills by imitating adults not you peers. In my particular circle of home schooled children this resulted in being more comfortable holding a conversation with other adults and in general less problematic social behaviors with other children."

When learning a language, the worst thing you can do is practice with fellow learners. It encourages propagation of mistakes, and can result in a miniature broken dialect among your group. I can see an argument that socialization is similar.