The other day I posted a link on Facebook to an article I wrote about wine writer ethics. A friend I respect made a comment that said, essentially, “Enough about wine. Real people are struggling in the world.” It led me to ask myself: Why do I write about wine? First, it’s important to understand that I do not write about wine because I like to drink wine. Not that I don’t like to drink wine, of course. But I was drinking wine long before the thought of writing about wine appealed to me. So why did that Facebook comment…