Fiction runs on idealizations of the world, and that jumps out when a bunch of them change -- how men and women are different, how people relate to authority, ... How thin those conventions and myths seemed to me made me less interested in today's fiction too, now.

http://www.exurbe.com/?p=2176 gets into some of this in discussing a couple of TV series set in the Renaissance: one of them's pushed more into a modern story-shape that modern viewers expect. (Skip down to the two paragraphs on Episode 1.)