I'm 30 with children...so no. I don't even like to see the teens in our neighborhood do it, not because they are teens, but because they don't even bother to dress up. They just walk around with a pillowcase.
I went trick or treating with my friend and her children to help but haven't on my own since middle school - maybe high school if I took my little sister. When we have kids I will trick or treat with them
Haven't for over twenty years - and I was still pushing it at fourteen. I decided while wearing an Elvira costume and getting wolf-whistled at that I looked too mature to be trick-or-treating. I don't miss it. As an adult, I can buy the candy I actually like (instead of getting a million Tootsie Rolls and Dum-Dum pops).
I'm disappointed that no one bothers to dress up now - the kids don't even bother to SAY "Trick-or-Treat!" either. It was sooooo much better when I was a kid.