At times, it felt like I was going to fill my HDD with just screenshots from World of Warcraft. Anything I think looked cool, areas as I flew over them on Flight paths, stupid things being said in Chat channels, and many other things, where all cause for screenshots.
I rarely do (and now I've quit, don't at all) because I've lost that little bit inside of me that made take a screenshot, because I wanted to preserve a nice memory. I look back on a few of my older shots, and I get a real wave of nostalgia. But, I doubt I'd be getting that when I look back on any Cataclysm or Mists Screenshots.