I would say yes, as long as you're building a greenfield project that is a database-driven web application, where your priorities include high productivity and

I would say yes, as long as you're building a greenfield project that is a database-driven web application, where your priorities include high productivity and quick time-to-market. It's basically been the default choice for web startups for several years now, lots of startup devs know it, and there are battle-tested libraries available for just about anything you want to do with it. And it is still aggressively adding new features, e.g. first-class support for websockets just came out in rails 5.