This is what the conservative media tries and clearly successfully in your post preaches. We are really hundreds to thousands of different ideological groups all being courted by the two biggest parties with a minority voting block with most people being left out of political all together.
When it comes down to actual personal beliefs, we split all kinds of ways that the conservative/liberal ideas cannot actually represent.
Most independents are not all that “independent” politically. And the small share of Americans who are truly independent stand out for their low level of interest in politics.
www.pewresearch.org