Packaged Beliefs

What is the point of political parties? I don't think I can envision how a democratic system would fail if all politicians ran on their independent philosophy, rather than a subscribed party platform. Party membership allows us to lump a group of diverse individuals into a rigid set of ideological principles, making them all look alike. It makes it easier for us to stamp complex individuals with black or white labels before they even speak.

How is that good?

Politicians who want party support often find themselves having to conform by disavowing principles that may deviate from the platform package. And thus we have these silly bundles of ideology that we can take or leave. So if you're against abortion, then you must also like guns. If you're for gay marriage, then you are pro taxes. If you're a fiscal conservative, then you must also be a social conservative. Besides the word "conservative", what is the connection between spending restraint and nostalgia for old fashioned traditions? How does this make sense? Parties dictate your beliefs as much as your beliefs dictate your party.

What would happen if all members of Congress were independents in mind and title? Wouldn't public discourse actually be a reasoned debate in the absence of a party line to stand behind?