Why would digital make it easier? serious question
because you don't have to wait for dailys to see how something looks in regards to lighting and the like
you look on the monitor and that's exactly what digital looks like
there's a GREAT documentary on it for Once Upon a Time in Mexico
Also have you noticed how films that rely on digital often put less emphasis on good acting and writing? Clone Wars is a great example in the sense that so many scenes are digitally spiced up, and it's so obvious the actors are secondary prop pieces. Same with Sin City, although I'm more forgiving there because of the content it's based on.
I love Zodiac but some of the digital backgrounds are rather jarring, particularly the scenes on Washington St. (where the cab driver crime scene is)