Elixir and Erlang have always garnered a lot of respect and praise - I’m always curious why they’re not more widely used (I’m no exception - despite hearing great things for literal decades, I’ve never actually picked it up to try for a project).
That's what I love about Elixir, but it means that selling it is more like convincing a developer who knows and uses CSV to switch to Postgres. There's a ton of advantages to storing data in a relational DB instead of flat files, but now you have to define a schema up front, deal with table and row locking, figure out that VACUUM thing, etc.
When you're just setting out to learn a new language, trying to understand a new OS on top hurts adoption.
Unless someone who knows those three languages is curious or encounters a particular problem that motivates them to explore, they're unlikely to pick up an immutable, functional language.
I have never looked back.
Elixir is an absolute joy to use. It simplifies multi-threaded programming, pattern-matching makes code easier to understand and maintain, and it is magnitudes faster to code in than Java. For me, Elixir’s version of functional programming provides the ease of development that OOP promised and failed to deliver.
In my opinion, Elixir is software engineering’s best kept secret.