In some quasi-ideal world where the parties worked together to compromise, voters would become apathetic (many would), they wouldn't get so incensed they'd write checks and volunteer and get out the vote etc. So, politicians have no vested interest in compromise. And your fans would of course criticize you for not getting everything you wanted. They want us as incensed as possible because that is how they get support.
There are ample areas where compromise is possible, give and take, but it's only very rarely going to happen.