My two cents: One particular church, or one particular congregation, isn't the entirety of the Body of Christ, any more than, say, the Worldcon Committee is the entirety of fandom. And not everybody has the gift of working through and with church politics without getting chewed up in the process -- there's enough necessary work to do in the world that (barring truly extraordinary circumstances) I don't think we're required to spend ourselves on things we're no good at and can't endure.