And specifically the evolution of your religion? (I mean, of course, from a secular, archaeological perspective. Your bible is not a history book)
Do you not see the man behind the curtain when you do so?
Especially when you consider that alcohol is legal. Non-lethal, and not nearly as debilitating as alcohol. It's also not physically addictive.
I can't think of a reason that such laws exist outside of the context of religion.