Give it a go. Ruby (and Rails) aren't going anywhere. There are far too many companies that are perfectly happy and successful with rails-based apps.
Name a tech unicorn from the last 15 years, they probably have some ruby/rails code that is foundational to the company. Many have adopted microservices and newer languages like Go, but the core Ruby codebases aren't going away any time soon.
Even outside of the rails ecosystem, ruby is a wonderful scripting language for writing small tools with. I prefer it to Python when I need something more powerful than bash/sh.
Name a tech unicorn from the last 15 years, they probably have some ruby/rails code that is foundational to the company. Many have adopted microservices and newer languages like Go, but the core Ruby codebases aren't going away any time soon.
Even outside of the rails ecosystem, ruby is a wonderful scripting language for writing small tools with. I prefer it to Python when I need something more powerful than bash/sh.