It seems to me that almost all Americans have some degree of Puritanism, whether they are Catholic or not.
You are French, aren't you? At what age do you start drinking wine during meals? I like to learn about different customs.
I once flew on an Air France plane, and they give you a little bottle of wine to drink with your on air meal. Quite amusing to me. The wine was good for my uneducated taste.
Almost all teenagers drink wine on Sunday with their family.
25 years ago I went to an all inclusive Club Med holiday in Corfu for the under 35s. The buffet lunches included unlimited wine and you just had to go back to refill the half litre jug every when needed. Despite this, I don't recall any drunken behavior, but the wine really made for some merry mealtimes.
I contrast this with my time in the UK, when last orders, at 10:40 before the 11:00 PM pub closing time, was announced by a bell ring followed by a pavlovian charge of people heading to the bar to get in a few pints. Then at 11:20 PM, simultaneously all across the country, millions of drunks were sent out in the streets. At over 5 £ a pint today, this 'culture' has pretty much ceased.