I gave up on that line of thought a good long while ago. I never expect people to read about the setting of any game I've run, mostly because the responses I got were too often something like: "You mean... I have to read?" 
At that point, my response becomes "Give me your character sheet, go sit in the fucking corner!'
My two biggest irritations are fairness junkies and roll players.
A fairness junkie is someone who finds something about the game that doesnt quite go their way or isnt as fair and balaced as it ideally could be and they basically STOP gameplay for the express purpose of re-formatting the rule to make it more fair. If it's hideously broken, the GM can make a quick-fix ruling and re-examine the issue later, AFTER game. I have seen this kind of thing literally spiral out to a half-hour argument and you want to just shoot someone to get everybody back on task. If you have a good GM, that generally doesnt happen but then you get the sulker, the player who gets shut down by the GM who is now going to spend the rest of game sulking about not having his injustice du jour put right.
Roll players are MADDENINGLY frustrating. On the rare occasion when cosmic rays descend forth from the skies and instill me with the desire to GM, I come down like the fist of an angry god on players who just roll dice and nod. I had a guy one time that I was GMing for and I was leading his character through a set that was SPECIFICALLY for character development, it was a grand place for it to happen set up just for him. He responded "Yeah....uh huh....I walk foreward...yeah....uh huh." Mechanically, it was not challenging, but it was a place where someone who had an idea of who their character was could have done SOMETHING.
It's a good thing I'm a dice collector and would never hurl my metal d20's for fear of losing them.
