Mandatory sentencing laws often target "moral vices" (such as alcohol, sex, drugs) and crimes that threaten a person's livelihood. The idea is that there are some crimes that are so heinous, there is no way to accept the offender back into the general population without first punishing them sufficiently. Some crimes are viewed as serious enough to require an indefinite removal from society by a life sentence, or sometimes capital punishment. It is viewed as a public service to separate these people from the general population, as it is assumed that the nature of the crime or the frequency of violation supersedes the subjective opinion of a judge. Remedying the irregularities in sentencing that arise from judicial discretion are supposed to make sentencing more fair and balanced. In Australia and the United Kingdom, sentencing has been heavily influenced by judicial idiosyncrasies. Individual judges have a significant effect on the outcome of the case, sometimes leading the public to believe that a sentence reflects more about the judge than the offender. Subsequently, creating stricter sentencing guidelines would promote consistency and fairness in the judicial system. Mandatory sentences are also supposed to serve as a general deterrence for potential criminals and repeat offenders, who are expected to avoid crime because they can be certain of their sentence if they are caught. This is the reasoning behind the "tough on crime" policy.