I'm doing API first stuff in Sinatra(or grape, or radial-ruby), sequel/mongoid. Static assets like JS and CSS can live on a CDN. If you need something google f

I'm doing API first stuff in Sinatra(or grape, or radial-ruby), sequel/mongoid. Static assets like JS and CSS can live on a CDN. If you need something google friendly on your views render with sinatra and your favorite template language, if not just write straight html/js apps with your favorite js framework. In a world where you are building API first, what is the point of rails over something lighter and more performant like sinatra?