I'm with MentalFrog. Very well put. Simply, I like what I like, and especially like the expansiveness of EQ. I, and many others, i'm sure, could go on for hours, for pages, about this game, it's complexities, it's social and other aspects, discuss specific items, places, persons/things, events.. not to mention do things in game. There are those who have 1200 AAs and gear to boot, who perhaps would grow bored if no more expansions were released. But I'm very pleased with the fact that I will likely never reach the relative "end" of each expansion until there are many more; the thought of being able to progress infinitely, always getting better, able to top a mountain and say "Yess, I've been after this goal forever" only to see endless hills in the distance, is a very good feeling.
I've nothing against other MMOs, but would almost never play them, as I'm just amazed every day at this game's legacy.