For example, I'd rather write code in a functional language than an OOP language, but others feel the other way around. Elixir is currently the closest language to my dreams, but my coworker hates working with it due to its functional nature. On the other hand, I'm not a big fan of Go (and would most likely choose Crystal over Go if I needed a compiled, single-binary something-or-other), but my coworker loves it.
I'm just glad that there are so many high-quality languages to choose from nowadays, and good paying jobs to go with them. That wasn't the case when I started my career 30+ years ago.