[genghizkhan]

Not OP, but for me it's the apps. While a good number of apps I use professionally can be used on both Windows and Linux, I prefer using OSX simply because Omnifocus, Fantastical and Spark exist on it. I'm sure there are other people who can use the Todoist/web/web trio or make do with Outlook (if you're in an all-Exchange shop with no CalDAV stuff), I'm just not one of them.

An alternative view is that Linux lacks good GUI apps and Windows blows at the command line (despite Bash on Windows). Windows apps also don't have great UX chops in the areas I'd like them to. 1password on Windows sucked the last time I used it, there's no native equivalent to Omnifocus or Things, there's no great calendar app like Fantastical, there's no great indie devs like Readdle[1] or Nucleobytes[2].

This comes from someone who's used all these OSes as well as FreeBSD and OpenBSD for both work and home.

[1]https://readdle.com/

[2]https://nucleobytes.com/