They sometimes even boast about it.
Fr. Z used to post photos of what he was drinking on warm sunny afternoons - I haven't noticed lately that he continues to post similar photos. Nothing wrong with that BTW - readers seem to like it. Other Catholic blogs often display or talk about their favorite brewskis, along with photos of the pope toasting the camera - all in good fun of course. After all, we are not Puritans. Drinks are on the house! Haha!
Catholics like to drink.
One of my confessors used to repeat scripture to me on how wine gladdens the heart and drinking in moderation is just fine. Those were the confessions after a night of drinking just a bit too much. At the time my confessor thought 2 to 3 drinks a night was just fine - but more than that - not so much. Falling down drunk seemed to be the point where mortal sin was committed. Whew!
I could make some pretty stiff drinks, so limiting myself to 2 to 3 drinks was pretty good. However, I came to the conclusion it was better just to stop drinking all together. I suppose I'd have a social drink if I'm out for dinner or something - but I haven't been anywhere to have one since last Christmas. That said, I don't think it's a good idea to drive - even after one drink.
Years ago, when I did a lot of drinking - not at home, but in the clubs, I drove under the influence. That was a sin. I might add however, that it's a miracle I never had an accident or got myself arrested. There but for the grace of God.
Catholics like to drink.
I love to drink. Although the words of Teresa of Avila always haunted me, "prayer cannot be accompanied by self-indulgence." That's pretty much the only reason I finally stopped drinking - better late than never.
Now far be it from me to tell anyone how to live their life, but I should think that for a priest, with a parish or some specific pastoral assignment, drinking might be unwise - especially if he could be called out on a sick call, assist the dying, and so on. As far as retired priests, and those with a lot of free time, drinking before cocktail hour is never in good taste. In the United States, drinking at lunch time may be inappropriate as well - even just wine. In Europe, things used to be different, but I think there may be alcohol problems these days.
Finally - if you must drink, have some one else do the driving.
"Honey, do we have time for a quick one before Mass?"
"As long as we got an hour before communion, Ma!"
Disclaimer: Just my personal opinion here - don't pay any attention to me if you don't like what I have to say.
"1Everyone has his own gift from God, one this and another that (1 Cor 7:7). 2It is, therefore, with some uneasiness that we specify the amount of food and drink for others. 3However, [...] 6We read that monks should not drink wine at all, but since the monks of our day cannot be convinced of this, let us at least agree to drink moderately, and not to the point of excess, 7for wine makes even wise men go astray (Sir 19:2)." - RSB, Chapter 40