If you are a consumer of personal finance content like I am, you have by now undoubtedly heard one commentator or another derisively dismiss the idea of even mentioning the long-term cost of a daily Starbucks trip. They don’t want to hear about it—it’s a trope to be ignored. And this derision is coming from otherwise competent and professional personal finance sources. This phenomenon got me thinking: what’s going on here? Surely Commentator X …