Counterpoint: why shouldn’t you?
A flag is a piece of fabric. People who swear their allegiance to it only tell the people more powerful than them that they will do any horrific things they are told as long as it uses that exact pattern of colours. They lose their individualism.
Know what else is a fabric? Toilet paper.
Counter-counterpoint: it’ll clog your pipes and ruin your septic system if you flush fabric.
That’s really the only reason not to use a flag.
I know. I was asking because the person I replied to said it was fabric, and my time working for a paper products company made me question their statement.