I’ve never used it because I thought it would make me some lightning fast super developer. I’ve always used it because it’s simply fun. It’s makes editing into this interesting sort of game. You start out with a simple set of skills from vimtutor, and inevitably brute force your cursor around the screen for a while. Little by little your movements become more complex and efficient, and the journey to figuring that out is fun and interesting.
It makes you think about typing in a totally different way. It makes it into a some kind of interesting game where your goal is to accomplish a task in the fewest keystrokes possible. That problem solving aspect scratches an itch inside my brain that has always kept me coming back. It’s just fun, and I don’t think that gets talked about enough