Im 33 and i dont care who knows i play. Almost everyone my age has never even herd of runescape.
My cousin's almost 31 and he plays Runescape too. He introduced some of his friends to the game and they all play together lol. I'm 21 and I don't see any problems with older people playing. The leader of the clan I'm in is a mother of a guy who also plays rs (not sure how old he is but I'd judge late teens/early 20s) and she's really cool.
I've been playing since 2003, making it almost 8 years I've been playing now. I was 13/14 when I started, and I never criticised anyone for their age. I listened and learned, and probably matured faster due to being around older players so much. There is no excuse for the amount of rudeness that people encounter for simply stating their age, and it seems worst in either Catherby or f2p. Just because I like a game doesn't mean I like kids in *that* way thank you very much
Ugh... This post is ranty but it drives me mad. Seriously, if they made Runescape 18+ (or even 16+) it'd be so awesome. It's rare to encounter a player in-game (not talking about forums here) who's younger than that who can string a basic sentence together.