Rails continues to include things that most developers need when building a web application or api.
While most people are arguing about web framework speeds Rails has been putting in features that are useful, like mail previews, strong params, async emailing, Russian doll fragment caching(nice if your still doing traditional templates, can be used with JSON rendering too). The community also has very nice and mature libraries for doing authentication, authorization, audit trail, and uploading.
Not to mention, testing is in out of the box.
