I'm afraid I don't like trick or treating, I can't comment on how it is conducted in the U.S but here in the U.K it seems to be little better than demanding money (or sweets) with menaces.

Since when was it ok to go knocking on doors and expecting to be given sweets or money?
I have notices that the local Police provide to put on my front door and windows saying 'No Trick or Treat'

I've nothing against Halloween, I'm an atheist with slight pagan leanings, I just don't like the idea that gangs of teenagers or even young children with their mothers can just knock on my door and expect to be given something, it's cold, dark out and people knocking on my door every 2 minutes for a couple of nights causes I disturbance that I'm just not willing to put up with.