Halloween: Who does this holiday belong to?

For years, on Halloween, children dress up in costumes and take a small bag (or large depending on their amount of desired candy) and go from door to door and say "Trick or Treat." Often, the parents are behind the children telling them to say please, thankyou, Happy Halloween etc... Children look forward to this holiday for the entire month of October, it is a time to be your favorite superhero, princess, movie character, animal, anything. Halloween is a holdiay dedicated mainly to children.
I can still remember my first Halloween that I got to pick out my own costume, I was five years old and I wanted to be Cinderella. So one weekend, my mother took me to the disney store in the mall and I sifted through every single costume until I found the right one. I found one that was blue with silvery lacy stuff over it and a picture of Cinderella on the front. I got a crown and some black shoes (much to my dismay since Cinderella traditionally wore glass slippers). When I finally got to Halloween I took pictures all over the place in my costume, I toted my parents all over the neighborhood claiming that I really want to go to this or that house because I just do. For years after that, my parents simply followed me around while making small talk with neighbors along the way. Often a house would give parents a beer and as a young one my parents told me that it was like their trick or treat. So parents are not the main focus of Halloween, children are.
As for adults that do not have children, they go to parties. From what I understand, these parties are just like anyother party but with a twist so that they can call it a Halloween Party. They decorate in orange and black, serve pumpkin juice that is actually just an alcoholic drink, and they dress up in skanky costumes to be different on one night of the year. I would say that children get to be different, they get candy, and they get to see their friends while adults get to either be toted around as parents, or if they are going to a party, they dress up, drink alcohol, and a large percent of them wake up in the morning with a terrible hangover. I would say that the children get the largest benefit and Halloween is definately a children's holiday.