I became aware of Emacs in my college days but kept using ViM, I was naive and thought no one uses Vim except me. I was proud because I was using something a hacker uses.
I actively started using Emacs in first year of my job. I was working for Curl project in Persistent Systems. At that time I had choice between Curl IDE, and Emacs. I am being inspired by all the movies immediately decided to use Emacs. Slowly and gradually I learned a thing or two about in Emacs. I learned the philosophy and learned to customise my own editor.
I have never felt limited with emacs, Partly cause I am good at using Emacs and partly I don’t like IDEs. I always find intersting people using emacs, a great example will be Yukihiro Matz, Inventer of Ruby. He shared a slideshare on Emacs, go take a look.