I think Joel touched on what it's all about, at least as far as the WT's concerned - control through guilt, and guilt through sex (something that seems to be common to all the monotheistic religions - figures that the Hindus came up with the Kama Sutra ).
And GET THEM WHILE THEY'RE YOUNG... God, when I think back to the sheer agonies of guilt I went through as a young JW lad growing up; feeling like the lowest leper, unfit to be around women, just for doing what every man, woman and child's been up to since the dawn of time...sneaking the rare, occasional "skin book", then shredding the evidence and disposing of it as far away from the house as possible - all the while, various then-'worldly' sibs of mine were out rooting merrily away to their heart's content...*sigh*
Nowadays I'm of the opinion that if God is someone (and I no longer think He IS) who endows humans with strong sexual urges when they're still no more than children, then immediately slaps a ton of guilt on their backs for exploring those urges (even alone), purely for the sole purpose of making their young lives a misery, then as far as I'm concerned, God's a sick twisted bastard who certainly doesn't deserve my respect, let alone worship...
Of course, I know better now - the sick, twisted bastards responsible for this unending tide of adolescent neurosis are in Brooklyn....
<B>"God help us, help us lose our minds..."</B> - <I>Talking Heads, "Slippery People"</I>