Keep in mind, Eragon, that no one thinks himself a villain, and few make decisions they think are wrong. A person may dislike his choice, but he will stand by it because, even in the worst circumstances, he believes that it was the best option available to him at the time.
Until we invent telepathy, books are our best choice for understanding the rest of humanity.
For her, choices were simple; either there was an action she could take to improve the situation, in which case she took it, or there was not, and everything else said on the subject was so much meaningless noise.