If you’ve used vim for a while now and feel a bit stuck, they bring you to the next level and are pretty straightforward.
That said, other editors also have their pros and I’ve become a bit tired of looking for the most efficient one or so. It really doesn’t matter in my job if I need x hours or y hours to write something (although vim probably scores well there). I use it nowadays mostly because it works well for me, it feels kind of fun, it doesn’t eat my computing resources, and it’s here to stay (free).