I hated maths.
Mathematics was frustrating. When I was young it seemed to be pointless to spend too much time on solving mathematical problems whilst you have so many other things to do!
Actually, I can create beautiful concepts if I know more about maths!When I was a university student, I took an interactive art class where they taught me how to be a creative artist by writing code with Processing. From one of the examples, I found gorgeous art created by Marius Watz (he is my idol since then).