I'm not really a fan of big and magical frameworks. So the existence of Rails doesn't actually make me think Ruby is superior to PHP, although I need to try Sin

I'm not really a fan of big and magical frameworks. So the existence of Rails doesn't actually make me think Ruby is superior to PHP, although I need to try Sinatra. That being said I like Ruby's OOP. But in the end all OOP is the same. In my opinion, if you're an experienced PHP developer, and you're looking to expand your skillset, gaining another standard web development OOP language isn't going to change much of your value proposition. I would look closer into things like Node, Golang, Rust, Functional languages and Python (for scientific computing). Getting skills in Ruby in Rails seems like you're just adding another web dev language to your existing web dev language capability. It's all about MB vs MC.