Meanwhile I do care. My main reason being: macOS offers fantastic facilities for inspecting and scripting the native GUIs, think using the web inspector or GreaseMonkey, but across the entire OS - but of course it breaks e.g. on Electron apps. Other people will cite help menu integration, custom key shortcuts, accessibility (not only for the disabled), and - yes, resource usage. I remember being productive on a system with 256M of RAM, and before that - 4M, and before that - 64k. It's frustrating to see so much progress wasted, I shouldn't need to close ALL of the chat apps just to run StableDiffusion more smoothly.