Right, so if a crack dealer offers a free sample of their range of products to a kid, we shouldn't support the kid, just positively support them?
You have a really low opinion of kids. I feel sorry for your kids. My kids were educated about the dangers. They knew they could talk to me and get straight answers, so any weird situations they found themselves in, they declined until they could speak with me. My children are now fully functional adults. I am betting yours are crippled by the lies you fed them.
You protect your kids by teaching them to protect themselves. YOU do not protect them, they protect themselves. Kids will not be kids forever, so taking learning experiences away from them by sheltering them is ill-advisable.