I also view it a as practical skill. I'm paid to write in a practical language which is mutating into a monster I no longer consider fun to write in.

But as I started a new project which eventually could be a business, then I can use whatever language I want, as long as it's practical for my use case. Why would I use any other language than one that I already know and like? It would make no sense. If you were to start your project, you would probably pick a language you enjoy using, rather than the one you are paid to use, unless it happens to be the same.