Having to write journals and background info for days is really really tiresome for someone with as vivid imagination as me - I get more ideas while writing a sentence then I could describe in ten.
The biggest problem must be the importance of the info tho. You see, I can link a frog to the end of mankind and rise of demonic superpowers from the latest battlefield edition of Bible (ESV), but I have a hard time writing simpler quests. I even failed at a random bring me 20 hides quest, because that ended up in the underworld filled by pale monk dwarves riding bear cavalry.

Sigh, I give up, I'm just too good for all this...