The initial comment seemed to be from the perspective of an audience member wondering why verses were repeated"
as a performer i have attempted to answer that,here we go again, on occasions when it has been a non narrative song, such as the candlight fisherman ,or april morning or a shanty, and i have noticed the audience is joining in choruses, i have used it in effect like an extra chorus, there is nothing moronic about this, it is about noticing the audience are having a good time joining in and trying to keep the audience in that mood, simple really its not rocket science.