Masks seem to me to be a polite way of saying to front-facing retail employees and government workers that I realize your exposure is much greater than mine, I

Masks seem to me to be a polite way of saying to front-facing retail employees and government workers that I realize your exposure is much greater than mine, I appreciate the risk you are taking, and I will do this small/large gesture to keep you safe. Might help me too, who knows...