Unbiblical reason not to use wine no. 1: the Bible says that Christians should not drink alcohol at all. Myth. Find the verse.
Unbiblical and dumb reason no. 2: people who struggle with alcoholism shouldn’t be tempted. What? The evangelical church is one of the most gluttonous and overeating communities you’ll find in America. If anything, we should worry that the bread will tempt people to go to Old Country Buffet and eat from the various troughs as they stuff themselves after church on Sunday. There are more overeaters in your church than alcoholics. Few pastors have the courage to address overeating however. SIDENOTE: What would happen if the church treated people with drinking problems and over-eating problems the same way? Ok, so the weaker brother argument won’t work here. Next?
Stupid reason no. 3: we’ve always done it like this. Ahh, not really. Using grape juice is new folks. The United Methodist started this during the women’s temperance movement in the 1870s and 1880s. Here’s the real reason: people don’t know the history, they don’t like change, and many claim that doing what Jesus actually said would now dissension. I think we heard about this before in Galatia (law vs. grace).