Earlier quoted context omitted.
Speaking for myself, I have already learned JavaScript - I just don't want to have to use it.
What I learned about myself working as a NodeJS developer: I’m okay writing JavaScript as long as I don’t have to spend all day every day writing it.
I was primarily a PHP backend dev for 15 years who only used jQuery to toggle classes on click actions, but decided to try something new and switched to Node in 2015.
Node + ECMAScript 2015 just BLEW my mind and was so fun, that not only am I now primarily a Node dev, but I've excelled extensively in the frontend.
I've never enjoyed building websites or web apps as much as I have in the last 5 years.