A little over a month ago I became a part of the second group (from the top)
Belonging to the '18-23'-group (as opposed to belonging in the '17 and younger'-group) made me sad and happy at the same time. I got the slightest sting from the 'I'm-old!'-thorn, but at the same time (equally irrationally), I felt that it ment that I'm somehow more mature.
I sometimes feel that I'm much too young to discuss things with older people (be it 5 or 50 years), so becoming older made me happier in this respect. The main thing that makes me appreciate older people in discussions is that they generally write and express their thoughts very clearly, which I think I can't do well enough. Although not being native English-speaker definitely has a large effect in this.
I've been playing DF since I was 17.25. A friend recommended it to me in last November because of the Z-level update. He probably found it from Something Awful Forums.
Just turned 17. I don't know a single person in RL who's interested in DF... most of them start screaming "ARGH! NOOOOOO!" When i start talking about it...
My friends don't start doing that until I SHOW them DF.
I interestingly have 3 real life friends who play DF and 1 real life friend who goes "ARGH! NOOOO!", everytime the conversation turns to DF (which it does disturbingly often.) Then there's the other people (girls and such) who just look at us strangely when we talk about beating childs to death with their brother's arms and planning kitten-powered spiketraps.