Simple. Same reason people code in C or Python or Bash. And not C#, Ruby, ZSH, or much worse: their own implementation or whatever: It standard. Everyone knows

Simple. Same reason people code in C or Python or Bash. And not C#, Ruby, ZSH, or much worse: their own implementation or whatever: It standard. Everyone knows how it works. It's proven. So unless it's really not good enough, diversity for the sake of diversity is the opposite of being efficient. Hence, you're asking the wrong question. In fact, you shouldn't ask a question. Show or prove your solution brings a REAL benefit. If you can't, you're indeed wasting your time.