This song could be about drugs or weapons. The line "I need more, I need more" is a common excuse for demanding something you want. The line "Don't ask what it's for, don't ask what it's for" could indicate that the person is trying to hide their true intentions. The line "I know the world's got problems, I've got problems of my own. They ain't the kind that can be solved with an atom bomb" indicates that the person's problems are less devastating for the world and are more personal problems.
Aaron - Hollister, MO