But, we choose these politicians. These politicians bring home that new road from BFE to nowhere. They get funds for that new wing on the library (named after themselves). They provide food, medical care, rent, phones, endless "grants", subsidies, tax credits and deductions. You name it and if enough voters want it then a politician will give it to them. If politicians are for sale (did I just say "if") then I would say that the citizens and their votes are for sale also. Votes are easily purchased through endless projects or "services" all of which can only be purchased by increasing debt. And all of which are loved the by the voting public.
Two words. Term limits.