Guns require skill and bullets and can be easily taken from you by your 'intended target'.
A precision missile with a large payload, however.. that's fire-n-forget. I'd say you could solve a good bit of overpopulation, land values, poverty-fees and crime in just a few minutes. Unintended targets would be affected, sure. But desperate times require desperate measures. Unless you dont actually MIND people running around acting a fool, raising fools and .. I dunno. Something else offensive and rage-provoking that ends with fool. Because that's cool. Unlike school.
Ahem, anyway. :\