It happened to me around the time my wife was pregnant, although to be quite honest, I hadn't cared much for video games since 1990 or so. Gran Turismo was more interesting for the inner car and racing nut in me, but with a new life on the way, I stopped caring about video games altogether, and found more creative and "important" things to do with my spare time.
I never been a big fan of the now-now-now-tempo of the gaming industry; many games and consoles are perceived to be a disposable commodity, based on attitudes and the opinion that another game just comes around and tries to improve on it. If you're really interested in a game, and you haven't over-saturated oneself with it every hour of every day, obsessively trying to be better at it in every facet, it takes much longer for it to get stale.
I won my PSX, and I bought about six games for it. I waited 3 years to get a PS2. I have no plans (nor time) for a PS3. That's probably why you don't find me much in the gaming sections here. I'm too jaded to care.