For guis in general, I like how the actions available to me are much easier to learn, and therefore use. The information conveyed through the layout often provides context for related actions.

In my experience, CLIs are great for efficiency, if I am doing a task so often that it becomes rote behavior and learning the tool is no longer helpful, or if I want to automate it. I find my real world need for either of these to be relatively slim, but I am not surprised that it is common for others.