Im 25.

The guild that I run with, has ages of 21,25,30,34. And I think
the one guy is in his 40s.

Though most of the kids that are also in the guild are kids of the guild members. I believe there are at least two 8 year olds and a 12 year old.

I will have to agree though. I see more adults act like kids then anything else. I think thats why so many say that one faction or the other is more "childish". Its not the faction. Its just the people playing the faction.