When I was about 12 years old I wanted to make my own website. My dad gave me a book about HTML and I created a little website with a picture and some text but was pretty frustrated.
Fast forward over ten years, to the moment I started my career as a Graphic Designer. The more I worked on web design projects the more development peaked my interest. Even though design is often backed by numbers it also has a subjective side. Development provides a nice break from the subjectiveness of design because the project either works or doesn't work.