My parents seemed to worry more about preventing kids from getting into trouble or making the wrong friends. My wife and I worry more about how to get them out of the house and make friends, period... and I hear this sentiment echoed every so often on HN (this being one of them).
How do you get teenagers to go outside and interact with other teenagers? That would not even be a question 30 years ago. The question would be how to stop them from doing so.
The advice I hear from the older generation so often just comes down to, "let kids be kids," but what about when you have to actually teach (and in some cases, force) kids to be kids? For my kids to have a healthy childhood, I almost have to create that childhood for them.