Humor has historically been tied to the mores of the day. The Yellow Kid was predicated on what people thought was funny about the immigrant Irish. When you're different in a society you're funny.
I remember Michael saying 'Rich and famous? It's much better to be just rich'. I didn't quite get it to begin with. But he's right. You lose anonymity. I say to my family that you've no idea until you lose it how precious anonymity is.