I haven't used it myself, but I've read that many Amiga third-party desktop software exposed an API to be programmed via a scripting language (called ARexx). You could easily automate tasks that cross application boundaries this way.

For example:

https://wiki.amigaos.net/wiki/Intuition_Screens

Also it is just a decent desktop OS. One of the problems with Linux (and OpenBSD / FreeBSD etc) is that the OS really isn't a desktop Operating System. It is a Unix operating system with a desktop.