A more simple editor will help you be a better developer, at least I think so.
IDEs will auto complete methods and stuff, and you won't learn and remember the API of the language you are using.
Vim or Emacs are customizable and work EVERYWHERE. So it's a big win. Also, they are free, not all IDEs are.
I can have my Vim setup on Github and use it on all computers I work on. Also, when you work with linux servers, knowing Vim (same goes for Emacs) can help you and save time.
I use the 2, Vim for code, and Emacs for documentation. Vim is a must for me, as of a few years ago, I started to feel some pain in my hands and right shoulder, and I decided to go full keyboard. I feel so better now. (+ mechanical keyboard and track ball)
Last point, my co-workers almost all code with the mouse, even to copy-paste variables! It's insane, as a developer, you have to type to remember the flow of your program.
I don't understand young devs nowadays saying they think programming is cool, but don't type code and copy/paste as much as possible. What sad times...