NEVAR. Seriously though, I went trick-or-treating last year with some friends as a high school senior. Then again, I look a couple years younger than I am, but that’s still older looking than the ‘normal’ age range. Go as long as you feel comfortable trick-or-treating, I say. I mean, it might be a little weird if you’re a 40 year old and not escorting young children, but most people wouldn’t be comfortable doing that anyway.
I prolly won't go this year because I haven't had time to create a costume, my friends are either too busy to go or are attending college Halloween parties, and I doubt the cold I've got will go away by then.

So, if I actually do go anywhere it will likely be to a party rather than actual trick-or-treating. Though I may opt to escort my younger siblings if I get a costume done.
Ironically, my class read an article today about a town in Virginia, I believe, that made it unlawful to Trick-or-Treat over the age of twelve. I swear, I almost died right then and there. It was the most ridiculous thing I had heard since we read about the "Fat Tax" imposed in Denmark. I think that's just way too over the edge. And why? Because "it scares homeowners to have 6-foot-tall teenagers show up at their doorstep in scary costumes," "because teens generally wear scary costumes that frighten younger children," and "older kids might take handfuls of candy while unsupervised while little kids with their parents only take one or two pieces." Their argument is completely ridiculous to me. What do the rest of you think about that? I think having your own, personal cut off age is fine, but a mandated one? No way.
I think it's ridiculous. Most teenagers who actually go trick-or-treating are harmless. I'm pretty sure teens who vandalize property are not the ones trick-or-treating, so it should actually be assuring to homeowners. As for 'scary' costumes, if one really thinks this is necessary, why not ban some Halloween decorations because they might 'scare' children too. It's only a logical extension of that law. And actually, when I was young some houses were intimidating to approach, but that actually made trick-or-treating
way more fun. I WANTED to be scared. It’s Halloween after all. :bleh:
Also, most children young enough to actually be scared by scary costumes on Halloween are usually accompanied by parents who can reassure them that it is, in fact, just a costume. Anyone old enough to go without parents should know that it's Halloween, and such things can be expected. And if other people with said scary costumes want to act like jerks and scare little kids, they usually are intimidated by the presence of parents and save their scares for other groups.