When I was in high school I played Halo 2 and World of Warcraft so much that, during summer vacation, I was literally waking up, playing one of those games, maybe eating, and falling asleep to repeat the cycle everyday. During school semesters I was playing in the morning right until the bus arrived and from the time I got home until bedtime. Most of my conversations back then while at school were with other people playing those games and we talk about said games and nothing else.
Can't say that that's happened since then, though. Right place, right time kinda situation. I was a teenager and had to stop playing soccer because of multiple injuries to my feet that eventually led to surgeries. So I had all the time in the world to invest in games and as fate would have it, those two games came out the same year I was bed-ridden.