I hate writing GUI's, I cannot get them to "click" with me, but for some reason the immediate mode GUI paradigm makes a lot more sense to me. It doesn't help that UI code is usually really blocky and error prone either, but IMGUI and GIO are great
Working with GUIs really "clicked" with me when I learned the Elm programming language and framework for building web applications (front-end) [1]. The Model-View-Update paradigm matches very well the UML state machine modelling taught in universities [2].
