I'm 31, and I hate that number and wish I'd could stay in my 20's, I still look and act like I'm in my 20's.
A few things that I would like to note as well:
Outside of the forum, when interacting with local support groups, going to some of the gay bars, or signing up for groups on meetup.com, the age demo's seem to mirror the age demo's here as well. I've always wanted to go to the SCC since it's right in my back yard, but also felt like it was an "Older crowd" Now please don't think I have anything against older people, however the kinds of activities I enjoy are more along the lines of that of a 24-29 year old than even 35-40. When I'm out at the gay bars most of the "girls" my age are the performers. The rest of the girls that are out 20-30 years a head of me. Most people are surprised when I tell them that I have little interest to do a drag show. (Ok, so I think it would be fun to do some)
Also, for statistics, I think it would be more beneficial to break the age ranges in groups of 5 rather than 10. Maybe that'll be a project of mine today!