Lot of nostalgia and time lost. My wife and I played together before we had kids so we could stay up to 2-3 AM on weekends and 40 man raid Molten Core or Blackwing Lair. We were lucky to find some married people who played and/or some more mature players. We stopped after we had kids (time crunch LOL) but we still keep in touch with some of our guild mates.
Folks mentioned the time lost. Honestly, if you keep journals of your time in Azeroth, you'll see that they rival any life story. I think the memories gained far outweigh anything "real." I think there are a few fiction writers that owe a few plot twists to what's happened in their game play.
