However my criteria for selecting a language for use in a professional context:
0: fit to task - obviously the language has to be able to do the job - to take this seriously you must define the job and what its requirements are and map those against the candidate languages
1: hiring and recruiting - there must be a mainstream sized talent pool - talent shortages are not acceptable - and I don't buy the argument that "smart people are attracted to non mainstream languages which is how we find smart people", it is simply not true that "most smart people program with Scala/Haskell/Elixir/whatever" - there's smart and smarter working on the mainstream languages.
2: size of programming community, size of knowledge base, size of open source community - don't end up with a code base stuck in an obscure corner of the Internet where few people know what is going on
3: AI - how well can AI program in this language? The size of the training set counts here - all the mainstream languages have had vast amounts of knowledge ingested and thus Claude can write decent code or at least has a shot at it. And in future this will likely get better again based on volume of training data. AI counts for a huge amount - if you are using a language that the AI knows little about then there's little productivity related benefits coming to your development team.
4: tools, IDE support, linters, compilers, build tools etc. It's a real obstacle to fire up your IDE and find that the IDE knows nothing about the language you are using, or that the language plugin was written by some guy who did it for the love and its not complete or professional or updated or something.
5: hiring and recruiting - it's the top priority and the bottom and every priority in between. If you can't find the people then you are in big trouble I have seen this play out over and over where the CTO's favorite non-mainstream language is used in a professional context and for years - maybe decades after the company suffers trying to find people. And decades after the CTO moved on to a new company and a new favorite language.
So what is a mainstream language? Arguable but personally it looks like Python, Java, JavaScript/TypeScript, C#, Golang. To a lesser extent Ruby only because Ruby developers have always been hard to find even though there is lots of community and knowledge and tools etc. Rust seems to have remained somewhat niche when its peer Golang has grown rapidly. Probably C and C++ depending on context. Maybe Kotlin? How cares what I think anyway its up to you. My main point is - in a professional context the language should be chosen to service the needs of the business. Be systematic and professional and don't bring your hobbies into it because the business needs come first.
And for home/hobbies/fun? Do whatever the heck you like.