Ruby is ﬁlled with examples of great, intuitive APIs..., and it seems that developers who write their own code in Ruby strive for the same level of obvious, inspired by the beauty of the language. We all want to provide that same feeling of happiness to developers that they get just from using the Ruby language directly.
- Excerpt from The RSpec Book
I can say from first-hand experience that the above is true. There's something about Ruby that inspires you to write code that's more expressive, obvious, and intuitive.