45 here. Started out back in the day with the various paper & pencil RPG's, Starfleet Battles, Avalon Hill wargames, etc. Got into PC gaming in earnest when Quakeworld came out. I was pretty actively into it for several years after that (Q3 Arena, etc.) but found myself playing less and less over the last 10 years.
This year has been interesting though, kind of a re-emergence into gaming. Second childhood maybe?

I'm fully hooked on Skyrim, I've been playing some other recent games (Battlefield 3, Star Wars TOR) and I've even joined a bi-weekly Pathfinder (D&D) game with a group at work. A year ago I never would have imagined spending so much time on the PC gaming again, let alone actually being part of a paper & pencil game again. Truth is, I'm loving every minute of it!
I guess this just all goes to show that age/maturity is in the eye of the beholder. Glad to see I'm not alone!