Parts of David Denby's review in the January 18th New Yorker are too good not to repeat.
...I'm beginning to wonder if filmmakers aren't using the world's end as a trope to license a neo-primitivist ethos. When people must scavenge just to survive, any kind of violence is justified. ...
"The Book of Eli"combines the maximum in hollow piety with remorseless vilolence. It's a true American commercial product, overflowing with barbarous acts and improving bromides.
Uh huh.