C (C++) and Java. Wow.
Even though I'm old, I'd sort of forgotten how speedy they can be. It's strange, because I actually work with Java and C in making streaming game engines. And you kind of get used to thinking in terms of millions on a set of hardware. So you think Java and C are slow. Then you realize if you were using Python or Node or anything other than C or Java really, you'd likely still be working out how to support tens of thousands on that same set of hardware. (If that.)
We can get so used to what we have. Maybe that's just a human thing.