Expelled from a cannibal commune....that would make sense. It was kinda irritating that it didnt explain any of that though in the movie. If it was important enough to leave only these two dudes without thumbs it should have been important enough to let the viewers know WHY!
RG - That was my reaction as well...they struck a gold mine, might have been wise to stay there and 'fatten up' a bit before heading out again. Also, it seemed that they ran across other people often enough to warrant NOT just meandering down the road like they owned the place. They never knew where and when bad guys would be, yet the just kept trucking down the middle of the road.
I really liked the fact that it wasnt a super positive, good guys always win type movie. I also thought it was interesting that there was so much mass/family suicide going on...something I hadnt really thought of before.