Finally saw this movie tonight on DVD. Disappointed in the ending a little. It was a bit too ambiguous, could've punched it up a little.
Otherwise this story was very personal for me. Anybody who has decided to build a shelter has gone through exactly what this guy got from his surrounding society.
You have to be thick-skinned. See the Deleted Scenes for the most interesting dialogue in the picture with the left-wing psychiatrist. The average person is just nowhere near reality nowadays. Not even close. Anybody living in this kind of world who hasn't had a strong instinctive desire to prepare is probably not intended by mother nature to live at all past the first couple minutes of birth.
The natural inclination to be self-sufficient no matter what happens is essentially the bedrock instinct of the human condition. If you don't have it, what on earth are you doing wasting your time here?