It's worked out well for me. I started picking it up almost 2 years ago and I make more than I ever did before. Where I work we are always advertising for Senior Rails Devs.

There are plenty of stable companies out there running Rails apps and I'd venture a guess that a lot of start-ups probably still use it as it's great for small teams and rapid-prototyping.

On a side note, we also have hired devs who don't have Ruby experience but who are generally smart, experienced people, who know more than one programming language and are willing to learn whatever stack they need to for getting the job done.

Where I'm from (Toronto, Canada), Rails development pays significantly more than any other stack and there is substantially more work available.

I'd love to DM you with some questions about Toronto. Can you ping me via my profile info?

Same here, on the other side of the country.

In Bangkok the demand for Rails developers is as strong as ever. With enough experience you will have no problem finding a job that pays better than other stacks. There are a number of companies like ours that'd be happy to help you with visa if you're willing to relocate. Happy to answer any questions! (contact info under my profile)

In Northern Europe the demand is high too. Would definitely recommend it!