You don't always get to have a side at all. If you are a member of a minority population, or if your political orientation is just a little bit too far outside the mainstream, you may never get a chance to vote for any candidate who represents your needs. There's that old saw about two wolves and a lamb voting on dinner; just because a political system is democratic doesn't mean it is necessarily just, or that participation would actually produce meaningful results. Abandoning the system and working around it can be the rational choice.