Was just giving more thought to this thread, and I can't say I remember anyone (parents) from back in my childhood days that never worried about their children, and while I by no means am suggesting that today's generation of parents aren't as caring, or of the same worrying type, I do tend to think because of the more strict atmosphere that was present when I was growing up, I do believe a higher sense of responsibility was at play, more so than today, where parents typically don't know their own children's friends parents, and vice-versa, and half the time don't even know what their children are up to or where they are.
For those who disagree with me, feel free to burn me at the stake.
Just an observation from an old-fashioned mom.