Why do Lutheran pastors wear clerical robes, anyway???

Here is a link to a show on Issues, Etc: "The Gospel for Former Evangelicals: The Office of the Pastor.": If you don't have time to listen, and want my bullet-point "why Lutheran pastors wear clericals", here it is: (1) No, we don't put the pastor on a pedestal when he wears a clerical. On the contrary, it is his uniform, just like a policeman wears a uniform to work. (2) The clerical is not to make a big deal out of the man. Although in many evangelical churches the pastor's personality and appearance is expected to make people comfortable and communicate that the pastor is just one of you, in our churches the clerical is used to hide the man, and magnify the Word. (3 )We do not think it is a meritorious work when the pastor wears a clerical. We do believe that symbols are useful in communicating truths, but we do not worship the symbols.