I celebrate All Saint's Day, but I've decided I won't participate in secular Halloween anymore. Jord doesn't celebrate it either, so when we have children in the near future, we won't be doing the whole trick-or-treat thing.
People who defend Halloween say, "Yes, but it was turned into a Christian holiday!" That may have been true in the past, but this secular "Halloween," as we know it, which tries to turn darkness, "spookiness," "ghouls," etc. as lighthearted fun has absolutely nothing to do with Christianity, or any of its messages. It's reverted back to a commercialized, secular Samhain.