Both sides are as bad as each other. Sure there may be a few individuals who truly stand for something and would sacrifice everything to make some change, but the majority don't and in many cases will never have the power or opportunity to bring about change.

Why?

They're individuals who above all look to secure the steady job that will provide the standard of living they aspire to. Unless someone can self-fund and run as an independent, they are beholden to those who provide the funds required to run for office and also have to pander to whichever party put then on the ticket.