Update FAQ: Why should I use action creators?

docs/faq/CodeStructure.md

@@ -4,6 +4,7 @@
 
 - [What should my file structure look like? How should I group my action creators and reducers in my project? Where should my selectors go?](#structure-file-structure)
 - [How should I split my logic between reducers and action creators? Where should my “business logic” go?](#structure-business-logic)
+- [Why should I use action creators?](#structure-action-creators)
 
 
 ## Code Structure
@@ -72,3 +73,27 @@ Find the balance between these two extremes, and you will master Redux.
 - [#1165: Where to put business logic / validation?](https://github.com/reactjs/redux/issues/1165)
 - [#1171: Recommendations for best practices regarding action-creators, reducers, and selectors](https://github.com/reactjs/redux/issues/1171)
 - [Stack Overflow: Accessing Redux state in an action creator?](http://stackoverflow.com/questions/35667249/accessing-redux-state-in-an-action-creator/35674575)
+
+
+<a id="structure-action-creators"></a>
+### Why should I use action creators?
+
+Redux does not require action creators. You are free to create actions in any way that is best for you, including simply passing an object literal to `dispatch`. Action creators emerged from the [Flux architecture](https://facebook.github.io/react/blog/2014/07/30/flux-actions-and-the-dispatcher.html#actions-and-actioncreators) and have been adopted by the Redux community because they offer several benefits.
+
+Action creators are more maintainable. Updates to an action can be made in one place and applied everywhere. All instances of an action are guaranteed to have the same shape and the same default values.
+
+Action creators are testable. The correctness of an inline action must be verified manually. Like any function, tests for an action creator can be written once and run automatically.  
+
+Action creators are easier to document. The action creator's parameters enumerate the action's dependencies. And centralization of the action definition provides a convenient place for documentation comments. When actions are written inline, this information is harder to capture and communicate.
+
+Action creators are a more powerful abstraction. Creating an action often involves transforming data or making AJAX requests. Action creators provide a uniform interface to this varied logic. This abstraction frees a component to dispatch an action without being complicated by the details of that action's creation.
+
+#### Further information
+
+**Articles**
+
+- [Idiomatic Redux: Why use action creators?](http://blog.isquaredsoftware.com/2016/10/idiomatic-redux-why-use-action-creators/)
+
+**Discussions**
+
+- [Reddit: Redbox - Redux action creation made simple](https://www.reddit.com/r/reactjs/comments/54k8js/redbox_redux_action_creation_made_simple/d8493z1/?context=4)