For better or worse, most of my sweet memories in WoW were from Cataclysm, even if the Expansion itself wasn't my favorite. But I think it's kind of scary how it literally stands out as being the Expansion that no one likes even on the slightest. WotLK was considered bad at one point, but people would eventually remember it for what it was, and it is loved to this day. Not only is that not the case with Cataclysm, the only thing people even say about it is "Let's pretend Cataclysm didn't exist"....yeah.