Why is there no diet alcohol?

There are diet alcohols. They are called light beers. Most light beers have lower calories and carbohydrates than regular beers. For example, Bud Light has 110 calories and 6.6 grams of carbohydrates per 12-ounce serving, while Budweiser has 145 calories and 10.6 grams of carbohydrates per 12-ounce serving.