Certain settings require certain clothing. Wearing jeans to the opera is like wearing a suit to a heavy metal concert.
People used to be raised with an understanding of what was appropriate in certain settings. That seems to have gone by the wayside in our culture.
Well, since the quality of opera singing has sunk to an all time low, when their standards rise to the days when Tebaldi, Del Monico, London, Nilsson, and Milanov were singing, (Yeah, I know it was before my time, but I do have the CDs...they're magnificent), then maybe I'll get a set of tails.
Until then, if they wanna sing like tone-deaf barnyard animals, I'll dress like Farmer Smith.