Vim's unique modal input system makes editing very efficient because you don't need to move your hands from the typing home position to reach for mouse or cursor keys. Editor commands can easily be repeated and chained with various keyboard short-cuts and quantifiers. The editor is also easily extensible using vim's own scripting language, so it can be used to edit practically anything.

I have a very specific workflow, write/fix code using a text editor, use git for version control, upload to github and test the newly released code using travis. The most important part, however is the text editor. The world I was brought up in did not have fancy editors to do half the job for a coder. Since the beginning, I was a fan of vi and its brothers, the simplistic interface that did not have anything extra, that did not require me to fiddle with mouse. However, vim was something that astounded me. It had the same features of vi, but not the quirks. It still starts in a flash, the insert/command modes are also intact but the additions were mind boggling, It has proper support for navigation keys, syntax highlighting, fully extendable with plugins and split screen support. It is the best text editor to date. For beginners, it also offers a gui mode.

vim has great support for keybinds, modifications, and it is extremely quick. You can customize vim exactly to your liking, and you can even install plugins and add-ons to show your current Git branch or status or show other helpful information.