Peer Pressure, cf. conformity
Charles Swindoll, Living Above the Level of Mediocrity, pp. 223-4
Once a spider built a beautiful web in an old house. He kept it clean and shiny so that flies would patronize it. The minute he got a "customer" he would clean up on him so the other flies would not get suspicious. Then one day this fairly intelligent fly came buzzing by the clean spider web. Old man spider called out, "Come in and sit." But the fairly intelligent fly said, "No, sir. I don't see other flies in your house, and I am not going in alone!" But presently he saw on the floor below a large crowd of flies dancing around on a piece of brown paper. He was delighted! He was not afraid if lots of flies were doing it. So he came in for a landing. Just before he landed, a bee zoomed by, saying, "Don't land there, stupid! That's flypaper!" But the fairly intelligent fly shouted back, "Don't be silly. Those flies are dancing. There's a big crowd there. Everybody's doing it. That many flies can't be wrong!" Well, you know what happened. He died on the spot. Some of us want to be with the crowd to badly that we end up in a mess. What does it profit a fly (or a person) if he escapes the web only to end up in the glue?