Here you go again...baiting. Then you fucking bitch and moan to the mods about people ganging up on you. GTFO.
Also, how do you know what goes on in every fucking neighborhood in America? Here's some real-world information for you, MINO...
I live in an upper-upper income area, houses in the $1m to $4m range and we do, indeed, see SUV's full of people on Halloween. They dump the kids off at one house and drive up one or two houses and wait for the kids to hit houses on both sides of the street. On to the next block, rinse and repeat. It is EXACTLY as Butch states in his post...almost to a 't'.
We used to decorate the house and front part extensively and have mini haunted house in the garage. It would take a week to get everything in order. We'd pull all the cars out of the garage and put them in back to use the 4 spaces for the mini-haunted house. When majority of trick-or-treeters were neighborhood kids, it was awesome and lots of people came not only for the candy but also the walkthrough for the 'scaries'. When it became apparent the majority of the trick-or-treeters were being hauled in by the truckload and simply wanted their handfuls of candy, we eventually wound down our decorating. We won't be doling out the candy this year either...yay for Halloween parties.