My wife used to get all grumpy with high school kids (and sometimes even adults) trick or treating. I told her, I'm glad to see anyone that still has that spirit and energy. And if they don't have costumes... They probably can't afford them. Worst case, they're doing something better than the trouble they could be up to.
... But fuck those people that take the whole bowl at houses with no one home.
And that's how you get a new Spider-Man villain.