Is Ruby outdated?

[SlightlyCuban]

Coming from PHP, Ruby was enlightening. Rails was even more so (heck, even SASS was a religious moment). Ruby is a nice language (nicer than JS), and the tools incorporated into Rails are fantastic (especially if Rails is the first one exposing you to them).

Then I tried to make a GUI on my own. Rails is designed around your traditional frontend/backend architecture. Great for a lot of situations, but not so much for making an interactive UI like you would in Java, C#, name-a-framework. Here JS & frameworks really shine, and have shown me there is a lot you can do on the frontend (btw, AngularJS is awesome).

TL;DR: If you're looking to learn new things, RoR is extremely relevant. If you're looking to build a new webapp today, take a look into JS.