This is a post of mine from a while back. It should clear up much of this confusion.
People point out the fact that Jesus drank wine. There is also much wine mentioned in the Old Testament. An interesting fact is that there are about 13 Hebrew words we translate as "wine," and only about half of them denote an alcoholic beverage. They made "wine" by many different techniques back then. Certain techniques rendered it alcoholic, and certain did not. Here are a few of my transliterations of these words - chemer, red wine; chamar, Aramaic for same; yayin, yeqeb, wine; mezeg, mamcak, juice mingled with other drinks; cobe', 'enab, alcoholic wine; 'asees, new wine, or grape juice; shekar, shemer, aged or strong wine; tyrowsh, new wine or grape juice. All of these are translated "wine" in the Old Testament. Throughout the O.T. a mention of acceptable consumption of wine is almost always in reference to a non-alcoholic "wine" such as grape juice, grape juice mingled with other drinks, the froth from grape juice scraped off and mixed with other drinks (such as myrrh), and so on. The New Testament is not clear on what type of "wine" is consumed; it is translated from Aramaic to Greek and the differences are lost. Officers within the church heirarchy are not to consume wine (I Tim. 3:3).
Most of the time when someone drank wine it was to kill bacteria that was so rampant back then (I Tim. 5:23), but that's a problem we don't have very often anymore. So what would the purpose of drinking alcohol be in the Gospel sense? Some say a glass of red wine a day is good for the circulatory system. Anti-oxidants are present in red wine, so it's good for you.
As true as that may be, a handful of grapes has the exact same effect. These anti-oxidants are found in what are called tannins, which are found in the skin of the grapes. Red wine is red because it is allowed to ferment with the skins of the grapes, coloring the wine. The tannins seep in and ta-da. Some say the fermenting process increases the anti-oxidants, but the difference is negligible.
Alcohol has killed more people than all the wars in recorded history combined. It is not necessary to drink it for our health, and it has no other productive use. There is no righteous reason to drink it at all.