I'm not saying that people have to listen to rock music. It's a great cool thing and it can really be liberating for a lot of people but hey so can Charles Dickens so I'm not going to judge.
I think that different pleasures work for different readers - a friend of mine won't read anything that's not a cardiovascular sort of page-turner. I tend to care less about plot but I'm a sucker for humor and strangeness.