But you recognize that this is a matter of personal taste and not one of universal propriety.
This is a very insensitive and self-absorbed position. It would serve you well to dispense with it ASAP, though it may come from a place of compassion and good intentions. Recall the old-ish saying, "different strokes for different folks." What may be unimaginably awful for you is paradise for another.
Proper socialization? Given some of your other posts, I have to say that this statement is more than a little puzzling. First, who defines "proper" here? The statement reeks of OSFA (One Size Fits All) thinking. We are not clones. Even then...
You presume far too much here. One can "what-if" oneself to death. What you describe is what in business we call "opportunity cost". Every choice of path that we make shuts us off from many others. This cannot be avoided as it is in the nature of things. It is as easily stated that by keeping the children away, the parents saved them from drugs, venereal disease, violence, and so forth. In fact, these are more likely and very arguably more significant concerns than that which you have cited.