You're wrong. Node.js has already overtaken what you think Ruby on rails "is". Node.js is the current darling of Silicon Beach. Add on some mongodb and more bells-and-whistles and you have Meteor.
This is probably a more important metric than language popularity on github: http://www.statisticbrain.com/computer-programming-language-... And I'm sure javascript has grown quite a bit in popularity in 2013.
Javascript is getting things done, and with node and mongo and now meteor, it's only getting easier.
It's a fact that many don't want to face, but you may need to practice your JavaScript skills to find your next job.