Sure we grow older, but if you are a Christian and let your young go trick or treat are you not letting them do what is forbidden by God's word, i.e. take part in earth's non-sense believes? When they realize what they actually did, how much credibility will you have in respect to your faith? The Bible, your are supposed to teach with, becomes nil and void, thus your faith. And for what, free candi?

Btw you won't see a Jew or a Muslim trick or treat.