Rev. Robert A. Sirico writes, "Yet the temptation to impose sin taxes is one that should be resisted for economic and moral reasons. The consequences of the sin tax are often the very opposite of those intended by its designers. Rather than increasing revenue, the sin tax can reduce it. Rather than discouraging what are regarded as morally questionable behaviors, the sin tax can make them more appealing. Rather than reducing what are perceived to be internal costs of the sin, the sin tax can increase them and expand them to society as a whole... Whatever economic or social benefits one can dream up from the sin tax, we must also realize that the decision to tax must be weighed against the social benefits for reducing the behavior by slow and deliberate persuasion and voluntary action. When it comes to public policy, the preferred method of discouraging sin should fall under the category of alternative, mediating institutions, notably family, church, and school. That would leave government officials more time to focus on the sins they can really do something about—their own."
Hate the Sin, Tax the Sinner? — The American, A Magazine of Ideas