Perhaps I am being too puritanical, but I really don't think so. The costumes these days are not sheets with two holes poked in them, but are grotesque creations right out of horror movies that are disturbing even for me to see. Furthermore, in the past several years the amount of witchcraft paraphernalia out in the culture has increased dramatically. My wife and I have seen many little girls dressed up like witches this year so far and it is always confusing for my daughters because we have taught them (and rightfully so) that witchcraft is a terrible sin and that witches are evil. But then we have situations like the following: my eldest daughter's best friend is her cousin (non-Catholic family). That cousin is being a witch for Halloween. "So daddy, if witches are evil, why is my cousin being a witch for Halloween?" It is terribly confusing for her and very difficult for me to explain.
We went into Kroger's supermarket the other day to get some groceries and my daughter screamed as soon as we went in the door because there was this bigger than life-size rubber zombie looking thing at the door that was hidden so that when you walked into the door it growled at you and lit up its eyes. Is that really fun for anybody? I had to hold my daughter for the rest of the time we were in the store. Why should we be subjected to that in the grocery store?