On the subject of "insipid musical material," is this a special test that we only impose on religious songs?   Songs in praise of trees, for instance, can be musically insipid too, and (recalling a long and fervent one at a song circle I once hosted) I confess, personally, to finding THAT a truly painful experience: sentiments you applaud set to awful music....   Of course, as Clairebear said, you don't have to sing along.....