I'm 35 myself, and been playing since I was 16. Still love every minute of it!
On the WoW note, I've never played myself; I prefer pen and paper games over computer games. However, one of my friends dropped off the face of the earth for almost a year because he started playing WoW. It's practically addictive for some people. I imagine it has to do with the pacing and the stunning visuals those types of games have. I don't see the attraction myself. I much prefer interacting with my friends and using my imagination to "see" the action. Also, I don't have the patience to sit through a computer game. After 30 minutes, I start getting bored.
To be honest, though, if I had cut my teeth on computer games instead, I would probably have the opposite opinion. I tend to be fanatically loyal to my pastimes.