Do buildings not need heating or cooling? Do different materials not have differing thermal properties? Do architects not need to have an appreciation of differing materials and their thermal properties?
It is only a fool who turns down knowledge as being useless. Almost anything in life is useless.... until that time you encounter a quite unexpected scenario when it suddenly turns out to be exceedingly useful. If you want to be an architect, you need to show a better attitude towards learning. How do you know if it will be useful or not? You have the rest of your life to live.