So you think there shouldn't be any criminal laws, or what? It's pretty clear that what deters crime is not necessarily the severity of punishment, but the certainty. When someone commits a crime for gain -- as opposed to somebody who's drunk or high or crazy -- he expects to get away with it. Convincing him he'll get caught is a big part of deterrence, for him and others. But the punishment has to be commensurate with the crime. If you knew that robbing a bank might get you a month in jail, you'd keep playing the odds. When you know it might get you 20 years in the Graybar Motel, you think hard.