People are extremely uncomfortable with uncertainty, especially about themselves. So they create explanations... Programmers also don't like uncertainty so they create programming languages. There's also a bit of "not invented here" syndrome.

Languages like Haskell are really applied type theory etc... In some sense, the academics invent languages for different levels of abstraction to ultimately write papers about how useful they are.

In terms of programming languages, personality wise, in the end it's all javascript. Then there is Java and the Jvm which is on a mission to co-opt multiple personalities.