I stopped trick-or-treating at 11 or so when I became self-conscious and had some depression/introvert stuff happen. Sometimes I'm sad that I stopped so early in my childhood. I just want people to know that I love them and want them to be happy and have fun.
I don't give a fuck how old you are. Are you having fun and want some candy?!
I'm at the stage where I'm ready to remove myself from Facebook and other stuff, but I also know just how isolating it will be.