I think it would be important to get for your kids once they're teenagers. Teenagers have a tendency to do the EXACT OPPOSITE of what you would expect or hope for them. It's just what they do sometimes. So they could actually end up having sex, whether you find out about it or not. I'm not saying they WILL, but better safe than sorry right? Besides, if they do wait until marriage, what if their spouse had had sex in the past unprotected? There is a possibility that the virus could still be contracted. In the end, it might be a moral dilemma for a parent, but it should be more for saftey than worrying about them having sex.