There are a lot of advantages to coding in your browser. You mentioned just one of them. But primarily it means you have no stack to install and configure, as Codio Boxes provide all that for you. Also, you will find that server development is much faster, as the connection between Codio Boxes and the internet is much faster than that of your desktop.

Other advantages include collaboration, teaching/learning, and of course no need to install or keep anything updated on your desktop - other than your browser of course.