In my case, I had some epiphany when I started reading essays by Paul Graham and Getting Real by Basecamp (well, this one is special in the context of RoR, of course).

I have always been very protective of Go and its minimalism, no huge frameworks like Django/RoR/Laravel (well, there are a few, but they aren't that popular or mainstream since the Go community favors just using the standard library).

However, the more I read about startups and prototyping, the more I think that spending time on boilerplate, writing custom migration scripts, and implementing database-backed job queues every single time is not what you want to spend your time on when you want to iterate as quickly as possible.

Also, another minor factor in favor of Ruby is the talks on destroyallsoftware such as "Functional core, imperative shell" and "Boundaries" where the author uses and seems to really like the language :)

On top of that, learning a new language/framework is always fun so I have already starting playing around with the official RoR guide.