I read them all the first time I was leveling. Now, after becoimng a loremaster, I still read those that I can't remember, but I just accept those I know what they're about. It's not like the quest will change. One of the reason I can't wait for Cataclysm is because of the new quests and lore. Now as for not reading quests = grinding, I can't agree with that. Grinding is much more monotonous compared to doing quests without reading. At least with question, you travel more, have a higher chance of encountering other people or something of the sort. With grinding, you just kill the same monster for a long time in one area and then move on to another.