> But today's requirements in terms of UX / dynamism (is that a word?) require you to end up building things differently, so even if you get up and running fast with a rails app, you'd end up having to build up a pretty hefty JS stack in the end, so you'd basically be delaying the inevitable.

I'm starting to wonder to what degree this is actually true.

Most people I know, all along the spectrum of 'computer literacy', complain about the slowness and brokenness of many sites and web apps. On the other hand I've never heard anyone complain about a lack of 'dynamism'.

To be clear, some degree of interactivity is often useful. But I can't help but feel that it's quite often not at all necessary to move things like routing, validation, and (almost) complete page changes to the client side, at least not as long as it increases complexity to such a degree.