Why frontends fail when you approach them like a backend

Frontend and backend development are not the same, but we keep conflating them. An explanation of what makes them different. I will never forget the look on a contractor's face when he stared at a technically correct, but aesthetically disappointing dormer at our house. "Everyone can mess around," he said. Referring to the fact that most people can accomplish the basics, but not all master a craft. In my own industry, there is no specialty that makes me think of these words more than frontend...