Arthur C. Brooks examines the advantages of moderate drinking. An excerpt:
Moderate drinkers are richer than teetotalers, too. In 2001 the University of Michigan's Panel Study of Income Dynamics found that light drinkers (one to two drinks a day) had a mean income of $49,000, versus $36,000 among teetotalers. This is a nuanced statistic; drinking may be associated with other variables (like education) that influence income. So the researchers did their best to strip these other causes out. If two adults were identical with respect to education, age, family status, race and religion, except that the first had one or two drinks each night after work while the second was a teetotaler, the drinker would tend to enjoy a "drinker's bonus" of about 10% higher income.