Dear Unlicensed Ethicist: While getting my caffeine fix en route to Perkins, I ordered a large iced coffee and asked the barista to leave room for oat milk. From the back of the line, a customer snickered that I could have just said leave room for milk. A little self-conscious, I turned and answered that oat milk is much better for the environment. My antagonist joked that I’m saving the world one grande blonde at at time. Am I a poser for mentioning the environment when I really choose oat milk because I like the taste?