By all means, wear what the chuff you like and let your nethers loose in the moonlight. If getting your baps out is an integral part of your Halloween, that's fine, but at least show a bit of creativity and the ability not to take yourself so bastard seriously.
I may live in the Royal Borough Of Greenwich but the part I live in is more rough than Royal and every other day can feel like Halloween. People demanding treats with menaces is a weekly occurrence, it just happens to be that my neighbours call them bailiffs.
Otherworldly tales remain popular because they allow us to escape our everyday lives. For a few hours we can experience all the wonders of a new world, both the good and the bad. We can set aside the maths homework or that stack of reports waiting for us on our desk at work.