I don't really think it's necessary either, plenty of games are hosted by people who will allow ages of 16 and up, sometimes even lower. It's not like minors can't attend events.
You mentioned how minors get a lot of bad rap, but from my experience that occurs almost exclusively on the boards and not at games.
I think that if you just attended games, which I don't know i you have or not, that would potentially erase the stereotypical airsofting minor profile.
Just get out there and play some games, then people will associate you with a face and hopefully a good attitude, not a forum name and an age description.