I'm 33, married with 4 kids, and I didn't really start playing games until I was 28. Sure, I used to play on the C64 when I was like 10 years old, but all through middle school, high school, and most of my 20's, I was never into gaming.
It wasn't until I was 28 when I was introduced to the FPS and became an addict. Since then, I've been an addict of Quake 2, Rogue Spear, Medal of Honor, and Battlefield 1942. With each of them, I spent at least 6 months playing almost every night. Even joined a clan for MOH and BF1942.
I have become less interested in recent months, but I think I may just be tired of the standard FPS format, and nothing else has caught my interest. When Battlefield 2 comes out, we'll see if I've really lost interest in gaming in general, or I was just tired of the games I'd played.