Band is a different hard. As physical as band is it's much more mental (once you get past September and the stupid heat). Some kids aren't meant for band. It's not personal. Some kids aren't meant for college either.
Some of those ag kids would rather throw livestock and hay around all day without complaining but standing at attention in a parking lot for 5 minutes is pure torture. To each their own. I'm just glad my band directors in middle school and high school valued the other activities as much as they valued their own, (band). I would have been one of those kids that would have chosen "other" if my directors had forced me to make a decision.