i grew up protestant AND in the bible belt (southern U.S.). It seems that this is the only place on the planet where alcohol is so heavily frowned upon.
I am embarassed to tell you that, unfortunately, in my "old" home country, Ukraine, Pentecostals and Seventh Day Adventists also preach complete abstention from alcohol.
My wife once was invited to a Ukrainian Pentecostal wedding and had the weirdest impression. She said it was just surreal. She ran away very soon.
And yes, where I live now, in the Southeastern USA, you see this exaggerated hate of alcohol all the time. A few years ago, my wife and I were at a Methodist wedding. A co-worker of my wife's, a guy from Croatia who was also at that wedding, said, "you know, I think when my Croatian grandfather died and we had a wake, people had much more fun than they are having here today..."