Celebrim said:
In my time I've 1st and 2nd hand experience with mixed age groups that were pretty vile. This experience includes groups that really did attempt some of the things Jack Chick thought were ubiqitious to D&D, such as attempt to cast real spells, use books of Witchcraft and/or the Satanic Bible as source books, engage in consumption of drugs, and engage in LARP which resulted in violence or vandalism.
Well, okay, vandalism/violence in the name of gaming is pretty doubleplusunhunkydory. And a couple of ill-advised adventures in my college days leave me convinced that drugs and gaming don't mix (with the exception of moderate caffeine and alcohol, natch).
But the attempt to cast real spells?
When I was in junior high, my gaming friends and I made up a fantastic world of which we were the rulers, and I was the spellcaster. I spent many afternoons writing spells for this world, complete with verbal and somatic components based on Latin, movie-spells, and my basic understanding of real-world thaumaturgical practices. Other junior-high kids thought I was a freaky dork for it, but I didn't come out worse for the wear.
And so many folks have become interested in druidism through D&D that Ar nDraiocht Fain, a national druidic-studies society, includes on their membership application a checkbox for "Dungeons and Dragons" under the "How did you become interested in druidism?" question. (or at least they did when I joined them back in 1989).
I don't see this kind of teenage exploration as particularly harmful.
I do think RPGs can help folks develop a morality, but I don't know that it's good for teaching morality. Games are often at their best when players get to experiment with a different morality altogether -- the unswerving certainty of a paladin, the loose property concepts of a thief, the deemphasis on humanity of a druid.
When I ran games as a teenager, I loved playing with this stuff, loved setting up societies around different moral concepts. It was a way for me to think about issues, to conduct thought experiments, to speculate. I didn't try to teach my players anything, but I hope that they got a chance to think about these different issues even as I did.
Daniel