A moderately bad man knows he is not very good: a thoroughly bad man thinks he is alright. This is common sense really. You understand sleep when you are awake, not well you are sleeping.
That renunciation of human closeness, of our deepest instincts: is it, in the end, simply too much to ask? Good men-sound, healthy men-can't make the sacrifice, or don't want to; has Holy Mother settled for the unsound and unhealthy? Has the Church, ever pragmatic, made do with what is left?