> I’m not a heavy user but I switch to the Windows PC at least once a day for a few hours of CAD, gaming, and one other engineering program that is Windows only.
Well yeah, maybe lead with that.
It seems like you don't actually need windows other than being a launcher for some very specific apps.
It’s an impoverished view of what an OS is. A great OS is also providing APIs that enable a cohesive desktop, integrations that enable apps, and other core services.
For example, iOS has a built-in API for managing calendar events. That means my third-party to-do list can show a calendar view with everything from my iOS-managed calendar. Similarly, iOS has an API that enables third-parties to build apps that interact with Apple Music - so you don’t need to use the default client. Another example is focus modes/contextual computing - the OS enables configuring various settings in an automatable way. Another service is the health-tracking database - all my health apps share a common view of data, so my nutrition app can see my weigh ins, calories burned, and glucose levels - all coming from different devices.
On macOS, it goes beyond being just a launcher by providing rich file system services - for example, features to automate working on directories as contents change. It provides integration points to enable providing actions/services that work on text fields. It lets you configure dictionaries that support right-click/force press to look up. It implements a rich eMacs-inspired shortcut system in text fields.
Windows used to have APIs and integrations to support showing calendar events in the clock area. It was going to have a unified tab system that let you have windows with tabs provided by other apps (Sets).
In other words, an OS isn’t just a launcher. It’s a system.
Well yeah, maybe lead with that.
It seems like you don't actually need windows other than being a launcher for some very specific apps.