I agree completely.
When my kids were growing up, we lived in a welfare town and saw more stuff than I'd have liked, but it did give us the opportunity to discuss bad life choices and reinforce right and wrong.
When they went off to college, they never asked me or anyone for a *list*.
All three of them are now pursuing grad degrees, and nobody ended up on drugs, in jail, pregnant, or whatever.
They knew what they believed and why they believed it.