I've never been trick-or-treating, largely because my parents thought that Halloween was rather silly, and of course I'd have been too old for trick or treating after I passed the age of 10 or so. Anyway, I hate Halloween with a passion. I mean, if we're going to have a corporate-sponsored opportunity for people to have a piss-up and generally behave like idiots, at the very least can't it be derived from a nice, wholesome Christian festival, in the way Christmas is, rather than some bizarre amalgamation of the horror genre and neo-paganism.
I suggest you read these to become better acquainted with your own religion:
Christianity: The Origins of a Pagan Religion -by Philippe Walter
Pagan Christianity? Exploring the Roots of Our Church Practices -by Frank Viola and George Barna
True, slight... oversight on my part in the original post. Nevertheless, whilst its arguable that, at a stretch, Christmas is still tangentially related to Christianity, it is not so with regards to Halloween. I mean, I think that most people would know that Christmas has a Christian connection, something that I doubt could be said for Halloween.
More to the point, I'd say that Halloween these days is far more influenced by what I described than by any lingering Christian traditions.