Ruby on Rails and Maintainability

/. asks "Is Ruby on Rails Maintainable?" and found lots of interesting comments about RoR and other programming and scripting languages. The conclusion seems to be "depends" and made me think about how we have so many different languages and I'm not happy with any (Smalltalk seems like the best of the lot still).

Easy to write and easy to test and maintain are hard to reconcile with today's language and environment.