What I find most annoying is that I have several very old iMacs. Apple disallows their OS upgrading, even though their hardware is still perfectly fine. I've been using them, which means I've been stuck working on Mac OS 10.15, and now I can't install many applications, including some basic libraries, because they're no longer compatible with 10.15. I don't want to just throw away my perfectly good computers, and considering I do most of my work in the terminal, and I'm shocked by Apple's recent UI updates on iPhones(They've got to be kidding), so after 17 years away from Ubuntu as my daily OS, I'm now considering seriously going back to it.