It's not stupid, it's an important part of life. While I do agree the young get all these thoughts of marriage and kids in their heads, but it's like falling out of a tree or wrecking on a bike....no matter how many times your parents tell you it's going to happen you don't believe it will until it does.
A growing trend now of the whole 'not letting your kids grow up' deal is prohibiting dating until college. I really don't agree with that. It's like home schooling until High School...you get kids that enter school and have no idea how to interact.
Even back in the 90's when this wasn't popular I remember my friends preying on girls that never had a date before and telling them sex was normal, and all these other lies that the girl ended up believing because she knew she was behind and just wanted to fit in. I didn't agree with my friends actions....not my call to police them, and I did tell them I didn't want to hear the conquests.
It's sad when you see parents being their children's worst enemies.