How far in did you play, though? Because I've...done everything there is to do in GW now, except for one bit of new content that I cannot beat still and some of the elite missions, but it's most definitely not like that. The only game that really has a lot of desert-type areas is Nightfall, because it's set on a continent based on northern Africa and the Middle East, and even that's not all pure desert. And the plotting definitely gets way more in-depth as you actually play through the game.
And no, the plot isn't something that especially stands out as being amazing, however, I like that the game was heavily focused on playing through a story, more like an offline RPG. And it really doesn't have fetch-and-carry, or "kill ten random things" quests and the few that do exist are directly tied into the plot.
I just don't like anything about WoW. I don't like the gameplay, I don't like the appearance, I don't like persistent areas in games, I despise grind, and I don't like how it takes so long to get even vaguely interesting. It's just not at all fun, and bad in every way to me.