Far more legacy code out there than green fields projects. All of that RoR code represents a lot of opportunity. And companies still write new code with Rails.

Far more legacy code out there than green fields projects. All of that RoR code represents a lot of opportunity. And companies still write new code with Rails. Rails heavily influenced other frameworks such as Laravel and Django so concepts transfer. I have learned many languages and tools in my career, many of which I only used for a short time. I don't regret learning any of them.