Maybe if it's a bad neighborhood with a lot of crime. Overall, doing it just makes me think they're too lazy to walk around for an hour or two.
I think its more the first part. Theres alot of neighborhoods *I* wouldnt feel comfortable trick or treating in. Let alone taking the children, that i dont have, to. New Haven comes to mind, i think that was the #5 city with the most homicides in the US lol.