Ruby is one of the most fun programming languages out of the 6+ languages I've worked with, and I was very productive with it. Unfortunately, due to my experience working at a Ruby shop where Rails misuse and abuse crippled the company, I don't enjoy using Ruby anymore, and will never recommend using Rails for production-grade software. Hopefully you've had a better experience with Ruby and still enjoy writing beautiful software with it - hopefully not with Rails.
I had a similar experience.
I love Ruby but too many companies assume I said Rails. I would also never recommend Rails for anything.
Instead I’d use Sinatra and Ruby any day.
It's one thing for J.K. Rowling to write Harry Potter outlines on cocktail napkins. A pen and a cocktail napkin can be quite the foundation for expression, indeed. But the same flexibility lets other people doodle, and still others blow their nose.
The capacity to enable greatness is neither the same as the encouragement to enable greatness, nor the guarantee to enable greatness, and there's a lot of survivor's bias at the top of the Ruby and Rails communities.