It feels weird actually being good at stuff, but angularjs and JavaScript in general is my bread and butter, so maybe I can help.
So the scope of front end web is changing and the sort of applications you can write with angular and extremely large and robust. You could of course do this with pure js even, but what angular gives you is a lot of very good tools to keep your code organised, concise and allow you to knock out huge projects in comparatively little time.
The view binding and view logic, when done right, are so very useful - trying to for example handle 4 inputs that have to communicate with each other and watch for each others changes is basically hell, but angular makes it next to nothing in terms of difficulty. Handling the logic for large repeating lists can be a nightmare, and it's super easy in angular.
When you get into the value of things like directives (and with web components coming, directives are good way to get your mind around the concept), services, and filters, you get what amounts to very little, concise code that is readable and separated in its concerns. The testability of this is also fantastic.
I mean, there is a lot more, but also consider hybrid apps with ionic, which uses angular. I've been using both ionic and angular for a very long time now, and they are very powerful tools on mobile. I can write a basic, functional app in hours, have oAuth, handle a handful of restful calls and make it look good in hours. I'm making an app in my free time and I think I'll probably sink 50-70 hours into it before I'm done with it. And it will be good.
A lot of very large companies have and are continuing to approach my company to write their applications, web or mobile or both, using angular and other JavaScript libraries, and the demand for developers is huge. If you are a web dev working with JavaScript, you do yourself a disservice by not learning angular.