I also see one of the major shortcomings of institutionalized religion in its relentless drive to limit God.  Yes, our faith is based on revelation to the Jews and in the Person of Jesus, but that revelation has given us only a glimpse, and also a contradictory view in many ways.  If you contemplate the Being who created EVERYTHING that is, it becomes both pathetic and laughable to contain God into tiny doctrinal boxes and say, "this is truth."  I think this is most applicable to those who understand Scripture literally, as well as those who absolutely refuse to recognize the natural evolution of understanding, ritual, laws and customs.