Reading Dietrich Bonhoeffer's Life Together at the moment. What about this for some thinking. Read and ponder.
"Innumerable times a whole Christian community has broken down because it had sprung from a wish dream. The serious Christian, set down for the first time in a Christian community, is likely to bring with him a very definite idea of what Christian life together should be and to try to realize it. But God’s grace speedily shatters such dreams. Just as surely as God desires to lead us to a knowledge of genuine Christian fellowship, so surely must we be overwhelmed by a great disillusionment with others, with Christians in general, and, if we are fortunate, with ourselves.