I'm speaking mostly from my own experiences as a child. I was often inclined to ignore directions unless they were explained to me in some way or unless there was the possibility of physical punishment (which wasn't harsh, but enough to inspire fear). If you can say to your children "Look here, this is bad because.....", you'll make far more impact than if you attempt to shelter them from something that is going to inevitably rear its head. That model of teaching children is already used anyway, as in "Billy is bad because he hit Bobby, we don't hit other people because..", so why not extend it to sexual exploitation when the children are of sufficient age to comprehend it?

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I want to know everything
I want to be everywhere
I want to fuck everyone in the world
I want to do something that matters