- I looked up the keyboard shortcuts for compose key and it seems like it takes a lot more typing to get to the characters I need than ABC - Extended: To get an acute accent I type opt-e o, for example, to get ó. The same on Linux is compose-'' o. Everything requires at least two characters with compose held down. There are a handful of characters/diacriticals that are shift-opt to reach, but the most common ones are less typing. Also muscle memory makes a difference.

- Many of the alternatives to mainstream stuff have compatibility issues. Maybe this is better now than the last time I've dealt with them last, but part of why I use word is that I need to send documents to people who use word and I'd rather not have surprises (smaller thing but still significant—Word for the Mac shows the word count at the bottom of the window. Word on Windows doesn't (or at least didn't the last time I used it) and Pages on the Mac will show wordcount only in a mini window.

I'm much more productive with a trackpad. MacOS also includes a number of shortcuts on the trackpad that don't work as well with a mouse (even Apple's magic mouse).

I'd note that some of it is also that I've been trained into the shortcuts that I have on the Mac (both keyboard-based and trackpad-based). Muscle habit goes a long way towards keeping someone on a platform.