Well, I agree with the substance of your note: I don't feel that we are well represented by our politicians - not liberals, not conservatives, not libertarians, not anyone.
Now then, I get to be anal about the answer to the question, lol (I'm a grad student at Johns Hopkins studying political philosophy...so I'm training to be an expert at complaining about the government

). The *anal* answer to the question is that America is not a direct democracy, but a democratic republic. Our system operates like a republic - ruled by representatives, including our senators and congressmen - but unlike in a pure republic, our representatives are democratically elected. Hence, democratic republic.
Here's the funny part: Plato warned that the danger of a democracy was mass-dumbness and the danger of a republic was oligarchy (i.e., representatives don't rule because they are the wisest/most virtuous, but because they have the most money). By building a democratic republic, we've managed to fall into both weaknesses.
That said . . . I still like our particular form of government. I just wish folks were still elected because they were the best/wisest/most virtuous, and not because they have enough money to out-campaign everyone else.