Assume you found an object and had no sense of what purpose its maker intended. Your first impression is that it's a nice-looking ball. Then, you meet the maker. He tells you: "That's not a ball. It's a sports car. It just doesn't have an engine, any moving parts or any space for a driver or passengers. It's rather ball-like, I suppose." Does the object then become ugly to you? Maybe it is ugly as a sports car--but as a ball, nothing has changed since your initial reaction.
Sometimes it is important to make distinctions, such as between a ball and a sports car when you need a way of getting somewhere quickly. The practical consequence is significant. Other distinctions in other contexts are not so important, such as whether the object on your shelf is a vase or a vessel-like decoration. In those situations, why choose to see the object in a way that makes it ugly when you could choose otherwise?
Edited by mafoofan - 2/10/16 at 8:42am