Just like in life, if you don't pay attention to the details, seek out more in-depth information and take somewhat of an active role in learning you will know very little about things.
There is tons of information and more about the game-world and the people that live in it, you just have to engage the world more instead of just labeling it stupid and avoiding it while expecting to have it brought to you on a silver platter and then shoved down your throat.