O please. You do know the unofficial "national anthem" was "My Country Tis of Thee" until the "Star Spangled Banner" was brought to prominence by Woodrow Wilson during WW1 to drum up patriotism? The Banner was made the official national anthem only in 1931 by Herbert Hoover in another propaganda attempt to drum up patriotism when he was about to be run out of office for implementing austerity and turning a recession in the great depression. The song was begun being played at the start of sporting events during WWII, again used as propaganda to drum up patriotism.
My Country Tis of Thee is by far the more classy and appropriate national anthem.
While we're at it, the Pledge of allegiance was a marketing ploy to sell flags to schools. So let's not get too worked up about the "reverence" aspect of propaganda and marketing ploys.