Asimov read the research and talked to the experts. His conclusion:
in a household where wine is regularly served with meals, and where there is not an alcohol issue, violence or a communication problem, young people might experience some degree of protection against future alcohol abuse by being offered small tastes of wine.... the research seems to indicate that it can help by teaching children that wine is a ceremonial beverage that we drink for its taste and for how it goes with food, and that the point of drinking is not drunkenness.
This seems to me an entirely sensible conclusion. Moreover, in 30 states, including Kentucky, it is legal for parents to serve their own children alcohol. I myself am a teetotaler and don't have wine with meals, so have not had occasion to offer it to my children. But I think that it is appropriate for my older teens to try alcohol. I will argue the benefits of a teetotal life, but if they learned to be moderate drinkers -- one glass of wine or beer -- that would be OK.