All I mean is that once you've had a reasonable grounding in sufficient "proper" literature to form your taste, you should never again read a book out of duty. Far too many of the (depressingly few) novel-readers I know do, though. They feel compelled to read the must-read new literary prizewinner; the must-read new, vibrant-insight-into-remote-foreign-culture novel. They have this idea in their heads, instilled from having to revere the classics at school, that literature is a lofty thing, that the best writing is fine writing or stuff they don't quite understand or feels slightly hard work.
It should be noted we aren't talking about students, who are doing a lot of 'duty reading' and rightly so, but those of us who have hung around long enough to have fully formed tastes. Do you still do any reading out of a sense of obligation these days?