Earlier quoted context omitted.
MacOS, is usually the answer.
That begs an even bigger why, given it's such an awful OS in many ways.
I actually like it. I get a sane shell with all of the basic *nix tools I need and I get the wide consumer-level support of the rest of the OS.
One basic thing I really enjoy is having extra monitors just work without wrestling with display settings. A small thing, sure, but it was a surprisingly persistent pain.