If you’re a beginner:

I almost gave up programming once, I thought I was too stupid.

Then I learned Linux and figured out starting out in IDEs as a beginner is the worst thing you can do. It doesn’t teach you anything, it just lets you get the job done - the thing that you should avoid while learning.

If you can’t build your software with only CLI - you probably have no idea how technology you’re programming in works.

If you are intermediate:

Reinventing the wheel is a great way to learn how libraries you’re using actually work.