Whereas the Bible explicitly forbids drunkenness, it nowhere requires total abstinence. Make no mistake: total abstinence from alcohol is great. As a Christian you are certainly free to adopt that as a lifestyle. But you are not free to condemn those who choose to drink in moderation. You may discuss with them the wisdom of such a choice and the practical consequences of it, but you cannot condemn them as sub-spiritual or as falling short of God’s best.