I know mine has. The time in my life where I had the most free time to play was in Wrath, because I was fresh out of high school and no longer living with my parents. Even though I had played both Classic and BC, the time I spent in Wrath were my "golden years" of Warcraft, because I had the most leisure time to develop and foster the in-game relationships that keep me playing to this day.
I think we severely underestimate how much the social and cultural "climate" has changed for the people who are now the ages we were when we started playing.