When I was learning C and C++ in college, my professor didn't show us what an IDE is until the second to last lab at the end of the school year. We were all like, "WHAT?! We were over here making Makefiles and all that when there's a piece of software that could do it for us?" But to be honest, after that, we didn't even use the IDE because we were already good at making Makefiles for our project, haha.

EDIT: Just remembered writing my first C programs in nano, lmao. I really wonder how much time I lost doing that, smh. Ended up using kate later on. I just learned vim last year out of forcing myself to abandon Sublime Text/Atom and once again, productivity skyrocketed.