With limited time and mental energy and I woukd say the languages are fighting for attention. The war is over why should I pay attention and for territory in my head.
Because this industry is a knowledge-based industry, and it's a good idea in general to always be honing your skills and learning something new.
Even if you don't have any intentions of using a new language in your day to day career, there's usually a few super-interesting morsels in there that you can add to your knowledge banks.
I've personally lost count of the number of times I took a concept I learned in another language or technology stack and applied it to my day job.
If you think that complaining about a language on the internet is an effective way to hamstring wider adoption in and of itself... I've gotta say the results leave much to be desired.
