IMHO, all one needs do is to just look at the havoc alcohol has reeked on our society (broken homes, cheating spouses, alcohol addiction, car crashes claiming lives, etc.), and ask yourself WHY any Christian would want anything to do with it. Parents giving alcohol to their children, especially Christian parents, shocks me, frankly. Is that REALLY a Godly example we want to be showing them? Maybe I'm "old fashioned", maybe some would call me something else, but I had an alcoholic father, and an alcoholic cousin, and I've seen what alcohol can do to a family. All from a "harmless little sip" when young. People, and especially Christian people, would be wise to leave alcohol alone.
That's all I'll say. Should be enough. The old phrase "playing with fire" comes to mind.